Yellow 1
yellow-1 · #FFF3BF
HEX
#FFF3BF
RGB
rgb(255, 243, 191)
CMYK
cmyk(0%, 5%, 25%, 0%)
HSL
hsl(49, 100%, 87%)
LAB
lab(95.6, -3.9, 26.6)
What is Yellow 1?
Yellow 1 is the yellow-1 reference in the Open Color. Its sRGB value is #FFF3BF (rgb 255, 243, 191). It sits in the yellow family. Open Color, an open-source color palette by Heeyeun designed for UI work. 13 hues across 10 shades (0 to 9) tuned for screen legibility and accessibility. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Yellow 1 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Yellow 1
An 11-step tonal scale derived from Yellow 1 (#FFF3BF). 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
#FFFEFA
#FFFEFA
100
#FFFDF5
#FFFDF5
200
#FFFBEB
#FFFBEB
300
#FFF9DF
#FFF9DF
400
#FFF6CF
#FFF6CF
500
#FFF3BF
#FFF3BF
600
#D9CFA2
#D9CFA2
700
#A69E7C
#A69E7C
800
#736D56
#736D56
900
#403D30
#403D30
950
#1F1D17
#1F1D17
Lighter tints (mixed with white)
15%
#FFF5CA
30%
#FFF7D5
45%
#FFF8DF
60%
#FFFAE8
75%
#FFFCF1
Darker shades (mixed with black)
15%
#EDE2B2
30%
#DAD0A3
45%
#C4BA92
60%
#AAA17E
75%
#898265
Color harmonies for Yellow 1
Classic color-theory harmonies derived from rotating the hue of Yellow 1. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#FFF3BF
#FFF3BF
#BDC9FF
#BDC9FF
Triadic
Three colors 120° apart
#FFF3BF
#FFF3BF
#BDFFF3
#BDFFF3
#F3BDFF
#F3BDFF
Analogous
Two neighbors ±30° on the wheel
#FFD2BD
#FFD2BD
#FFF3BF
#FFF3BF
#EAFFBD
#EAFFBD
Split-complementary
Base + two colors flanking its complement
#FFF3BF
#FFF3BF
#BDEAFF
#BDEAFF
#D2BDFF
#D2BDFF
Tetradic
Two complementary pairs
#FFF3BF
#FFF3BF
#C9FFBD
#C9FFBD
#BDC9FF
#BDC9FF
#F3BDFF
#F3BDFF
Square
Four colors evenly spaced 90° apart
#FFF3BF
#FFF3BF
#BDFFD2
#BDFFD2
#BDC9FF
#BDC9FF
#FFBDEA
#FFBDEA
Yellow 1 in every color space
Full conversion of Yellow 1 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
#FFF3BF
RGB
rgb(255, 243, 191)
CMYK
cmyk(0%, 5%, 25%, 0%)
HSL
hsl(49, 100%, 87%)
HSV
hsv(49, 25%, 100%)
HWB
hwb(49 75% 0%)
CIE Lab
lab(95.6 -3.9 26.6)
OKLCH
oklch(96.1% 0.068 96.6)
XYZ (D65)
xyz(82.69, 89.12, 62.13)
Copy-ready code for Yellow 1
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: #FFF3BF;
background-color: #FFF3BF;CSS variable
:root {
--color-yellow-1: #FFF3BF;
}Tailwind config
// tailwind.config.js
colors: {
'yellow-1': '#FFF3BF',
}Sass
$color-yellow-1: #FFF3BF;Swift UIColor
UIColor(red: 1.000, green: 0.953, blue: 0.749, alpha: 1.0)Android XML
<color name="yellow-1">#FFF3BF</color>Closest match in every color system
The nearest Yellow 1 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 Open Color
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 1013
#EAE6CA
Oyster white
RAL 1015
#E6D690
Light ivory
RAL 9001
#FDF4E3
Cream
RAL 9002
#E7EBDA
Grey white
RAL 7044
#CAC4B0
Silk grey
RAL 1000
#BEBD7F
Green beige
FAQ about Yellow 1
What is the HEX code for Yellow 1?
Yellow 1 (yellow-1) has the HEX code #FFF3BF. In RGB it is rgb(255, 243, 191), and in CMYK it is cmyk(0%, 5%, 25%, 0%).
What is the OKLCH value of Yellow 1?
Yellow 1 converts to oklch(0.961 0.068 96.6). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Yellow 1 accessible for body text?
Used as a background, Yellow 1 has a contrast ratio of 18.82:1 with black text and 1.12:1 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 Yellow 1?
The closest Pantone reference to Yellow 1 by ΔE2000 perceptual distance is Pantone 100 C (#F4ED7C). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Yellow 1?
The closest RAL Classic reference to Yellow 1 by ΔE2000 distance is RAL 1013 (Oyster white, #EAE6CA). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Yellow 1?
The complementary color (180° opposite on the HSL color wheel) of Yellow 1 is #BDC9FF. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
Open Color (Yeun)
Open Color, an open-source color palette by Heeyeun designed for UI designers and developers. 13 hues across 10 shades. Use as a designer-friendly palette alternative to Tailwind. Values are intentionally chosen for UI legibility and accessibility.
- Source type
- derived
- Confidence
- high
- License
- MIT
- Last reviewed
- 2026-05-24
Workflow tags
Open Color values are tuned for digital UI. For print, treat as a starting point and proof against the substrate.