#CFB434
Closest named color: Mustard (#CEB301). oklch(77.2% 0.143 96.7), rgb(207, 180, 52).
Aa
Black text reads best on this color (10.23:1).
About this color
#CFB434 is a medium-light, vivid yellow. In OKLCH its lightness is 77%, its chroma 0.143 and its hue 97°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard (#CEB301), ΔE 0.017 away. Black text reads best on it, at 10.23:1.
| Hue family | Yellows |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Mustard (#CEB301) |
| Black text | 10.23:1 |
| White text | 2.05:1 |
Values
| HEX | #CFB434 |
| RGB | rgb(207, 180, 52) |
| HSL | hsl(50, 62%, 51%) |
| OKLCH | oklch(77.2% 0.143 96.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #CFB434 | 2.05:1 | Fails | Lc -44.4 | Non-text elements, placeholder text |
| Black text on #CFB434 | 10.23:1 | AAA | Lc 64.1 | Content text, not long reading |
| #CFB434 text on white | 2.05:1 | Fails | Lc 39.9 | Non-text elements, placeholder text |
| #CFB434 text on black | 10.23:1 | AAA | Lc -62.5 | Content text, not long reading |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 300.
-
Step 50
50
#F9F6E8
oklch(97.2% 0.019 96.9)
-
Step 100
100
#F1EBCC
oklch(93.7% 0.041 98.1)
-
Step 200
200
#E8DA9D
oklch(88.5% 0.08 96.8)
-
Step 300
300 (this color)
#CFB434
oklch(77.2% 0.143 96.7)
-
Step 400
400
#BB9F00
oklch(70.6% 0.145 96.4)
-
Step 500
500
#A08800
oklch(63% 0.13 96.6)
-
Step 600
600
#877200
oklch(55.5% 0.114 96.2)
-
Step 700
700
#716000
oklch(49.1% 0.101 97)
-
Step 800
800
#5D4E00
oklch(42.6% 0.088 96.3)
-
Step 900
900
#4E4100
oklch(37.8% 0.078 96.2)
-
Step 950
950
#2E2600
oklch(27% 0.056 97.1)
#CFB434 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #C7B01C | 0.020 |
| Deuteranopia (no green cones) | #CEB93C | 0.012 |
| Tritanopia (no blue cones) | #E0A69B | 0.131 |
| Achromatopsia (no color) | #B5B5B5 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CFB434
#CFB434
oklch(77.2% 0.143 96.7)
- #A1AEFF
#A1AEFF
oklch(77.2% 0.117 276.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #CFB434, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard #CEB301 ΔE 0.017
- Dark Yellow #D5B60A ΔE 0.018
- Burnt Yellow #D5AB09 ΔE 0.023
- Olive Yellow #C2B709 ΔE 0.030
- Mustard Yellow #D2BD0A ΔE 0.031
- Muddy Yellow #BFAC05 ΔE 0.037
- Goldenrod #DAA520 ΔE 0.038
- Desert #CCAD60 ΔE 0.046
Use #CFB434 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.