Lightblue1
lightblue1 · #BFEFFF
HEX
#BFEFFF
RGB
rgb(191, 239, 255)
CMYK
cmyk(25%, 6%, 0%, 0%)
HSL
hsl(195, 100%, 87%)
LAB
lab(91.7, -11.8, -12.7)
What is Lightblue1?
Lightblue1 is the lightblue1 reference in the X11 named colors. Its sRGB value is #BFEFFF (rgb 191, 239, 255). It sits in the cyan family. Historical X Window System color names — the numbered 1-4 lightness variants of the classic xorg-server rgb.txt palette. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Lightblue1 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Lightblue1
An 11-step tonal scale derived from Lightblue1 (#BFEFFF). Click any swatch to copy its HEX. Use these as a starting point for design tokens, hover states, and disabled states in a design system.
50
#FAFEFF
#FAFEFF
100
#F5FCFF
#F5FCFF
200
#EBFAFF
#EBFAFF
300
#DFF7FF
#DFF7FF
400
#CFF3FF
#CFF3FF
500
#BFEFFF
#BFEFFF
600
#A2CBD9
#A2CBD9
700
#7C9BA6
#7C9BA6
800
#566C73
#566C73
900
#303C40
#303C40
950
#171D1F
#171D1F
Lighter tints (mixed with white)
15%
#CAF1FF
30%
#D5F4FF
45%
#DFF6FF
60%
#E8F9FF
75%
#F1FBFF
Darker shades (mixed with black)
15%
#B2DEED
30%
#A3CCDA
45%
#92B7C4
60%
#7E9FAA
75%
#658089
Color harmonies for Lightblue1
Classic color-theory harmonies derived from rotating the hue of Lightblue1. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#BFEFFF
#BFEFFF
#FFCDBD
#FFCDBD
Triadic
Three colors 120° apart
#BFEFFF
#BFEFFF
#FFBDEE
#FFBDEE
#EEFFBD
#EEFFBD
Analogous
Two neighbors ±30° on the wheel
#BDFFEE
#BDFFEE
#BFEFFF
#BFEFFF
#BDCDFF
#BDCDFF
Split-complementary
Base + two colors flanking its complement
#BFEFFF
#BFEFFF
#FFBDCD
#FFBDCD
#FFEEBD
#FFEEBD
Tetradic
Two complementary pairs
#BFEFFF
#BFEFFF
#CDBDFF
#CDBDFF
#FFCDBD
#FFCDBD
#EEFFBD
#EEFFBD
Square
Four colors evenly spaced 90° apart
#BFEFFF
#BFEFFF
#EEBDFF
#EEBDFF
#FFCDBD
#FFCDBD
#CDFFBD
#CDFFBD
Lightblue1 in every color space
Full conversion of Lightblue1 across the color spaces designers and developers actually use — including OKLCH (the perceptually-uniform space that powers Tailwind v4 and CSS Color Module Level 4) and HWB.
HEX
#BFEFFF
RGB
rgb(191, 239, 255)
CMYK
cmyk(25%, 6%, 0%, 0%)
HSL
hsl(195, 100%, 87%)
HSV
hsv(195, 25%, 100%)
HWB
hwb(195 75% 0%)
CIE Lab
lab(91.7 -11.8 -12.7)
OKLCH
oklch(92.4% 0.054 220.2)
XYZ (D65)
xyz(70.40, 80.03, 106.33)
Copy-ready code for Lightblue1
Drop-in snippets for CSS, Tailwind, Sass, iOS Swift, and Android XML. Click the copy button on any snippet to put it on your clipboard.
CSS
color: #BFEFFF;
background-color: #BFEFFF;CSS variable
:root {
--color-lightblue1: #BFEFFF;
}Tailwind config
// tailwind.config.js
colors: {
'lightblue1': '#BFEFFF',
}Sass
$color-lightblue1: #BFEFFF;Swift UIColor
UIColor(red: 0.749, green: 0.937, blue: 1.000, alpha: 1.0)Android XML
<color name="lightblue1">#BFEFFF</color>Closest match in every color system
The nearest Lightblue1 equivalent in every other color system on this site, ranked by ΔE2000 perceptual distance. Useful when translating between design-system, web-standard, and industrial color references.
Closest in X11 named colors
Top 6 ΔE2000-closest entries within the same collection.
Closest Pantone matches
Top 6 ΔE2000-closest Pantone references. Cross-system matching is approximate — see disclaimer.
Closest RAL Classic matches
Top 6 ΔE2000-closest RAL Classic references for industrial coating cross-reference.
RAL 9003
#F4F4F4
Signal white
RAL 9016
#F6F6F6
Traffic white
RAL 7035
#D7D7D7
Light grey
RAL 9018
#D7D7D7
Papyrus white
RAL 6027
#84C3BE
Light green
RAL 9010
#FFFFFF
Pure white
FAQ about Lightblue1
What is the HEX code for Lightblue1?
Lightblue1 (lightblue1) has the HEX code #BFEFFF. In RGB it is rgb(191, 239, 255), and in CMYK it is cmyk(25%, 6%, 0%, 0%).
What is the OKLCH value of Lightblue1?
Lightblue1 converts to oklch(0.924 0.054 220.2). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Lightblue1 accessible for body text?
Used as a background, Lightblue1 has a contrast ratio of 17.01:1 with black text and 1.23:1 with white text. WCAG 2.1 AA requires 4.5:1 for normal text. The current recommendation is to use black text and verify in real UI context.
What is the closest Pantone to Lightblue1?
The closest Pantone reference to Lightblue1 by ΔE2000 perceptual distance is Pantone 7457 C (#BBDDE6). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Lightblue1?
The closest RAL Classic reference to Lightblue1 by ΔE2000 distance is RAL 9003 (Signal white, #F4F4F4). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Lightblue1?
The complementary color (180° opposite on the HSL color wheel) of Lightblue1 is #FFCDBD. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
X11 named colors (xorg rgb.txt)
The historical X11 color name list shipped in the xorg-server rgb.txt file. Roughly 550 entries covering classic computing color names like 'PapayaWhip', 'MediumAquamarine', and 'DarkSlateGray'. Many CSS named colors originate here. Use as a reference for legacy and creative color names. Most modern CSS implementations accept these names directly.
- Source type
- derived
- Confidence
- high
- License
- MIT/X11 license (X Consortium)
- Last reviewed
- 2026-05-24
Workflow tags
X11 colors are sRGB digital values from a 1980s color system. For print, convert to a process-appropriate color and proof against substrate.