#CFB10A
Closest named color: Mustard (#CEB301). oklch(76.4% 0.156 96.7), rgb(207, 177, 10).
Aa
Black text reads best on this color (9.94:1).
About this color
#CFB10A is a medium-light, vivid yellow. In OKLCH its lightness is 76%, its chroma 0.156 and its hue 97°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard (#CEB301), ΔE 0.006 away. Black text reads best on it, at 9.94:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Mustard (#CEB301) |
| Black text | 9.94:1 |
| White text | 2.11:1 |
Values
| HEX | #CFB10A |
| RGB | rgb(207, 177, 10) |
| HSL | hsl(51, 91%, 43%) |
| OKLCH | oklch(76.4% 0.156 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 #CFB10A | 2.11:1 | Fails | Lc -45.8 | Large or bold text, headings |
| Black text on #CFB10A | 9.94:1 | AAA | Lc 62.8 | Content text, not long reading |
| #CFB10A text on white | 2.11:1 | Fails | Lc 41.1 | Non-text elements, placeholder text |
| #CFB10A text on black | 9.94:1 | AAA | Lc -61.1 | 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
#F9F6E6
oklch(97.1% 0.021 98.1)
-
Step 100
100
#F2EBC9
oklch(93.7% 0.045 97.6)
-
Step 200
200
#E9DA97
oklch(88.5% 0.087 97.1)
-
Step 300
300 (this color)
#CFB10A
oklch(76.4% 0.156 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)
#CFB10A 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) | #C5AD00 | 0.020 |
| Deuteranopia (no green cones) | #CCB620 | 0.012 |
| Tritanopia (no blue cones) | #E0A297 | 0.144 |
| Achromatopsia (no color) | #B2B2B2 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CFB10A
#CFB10A
oklch(76.4% 0.156 96.7)
- #9EABFF
#9EABFF
oklch(76.4% 0.121 276.4)
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 #CFB10A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard #CEB301 ΔE 0.006
- Dark Yellow #D5B60A ΔE 0.016
- Burnt Yellow #D5AB09 ΔE 0.017
- Olive Yellow #C2B709 ΔE 0.024
- Muddy Yellow #BFAC05 ΔE 0.029
- Mustard Yellow #D2BD0A ΔE 0.032
- Goldenrod #DAA520 ΔE 0.037
- Yellow Ochre #CB9D06 ΔE 0.052
Use #CFB10A 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.