#C9B52F
Closest named color: Mustard (#CEB301). oklch(76.8% 0.146 100.3), rgb(201, 181, 47).
Aa
Black text reads best on this color (10.13:1).
About this color
#C9B52F is a medium-light, vivid yellow. In OKLCH its lightness is 77%, its chroma 0.146 and its hue 100°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard (#CEB301), ΔE 0.014 away. Black text reads best on it, at 10.13:1.
| Hue family | Yellows |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Mustard (#CEB301) |
| Black text | 10.13:1 |
| White text | 2.07:1 |
Values
| HEX | #C9B52F |
| RGB | rgb(201, 181, 47) |
| HSL | hsl(52, 62%, 49%) |
| OKLCH | oklch(76.8% 0.146 100.3) |
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 #C9B52F | 2.07:1 | Fails | Lc -44.9 | Non-text elements, placeholder text |
| Black text on #C9B52F | 10.13:1 | AAA | Lc 63.6 | Content text, not long reading |
| #C9B52F text on white | 2.07:1 | Fails | Lc 40.3 | Non-text elements, placeholder text |
| #C9B52F text on black | 10.13:1 | AAA | Lc -62.0 | 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
#F8F6E7
oklch(97.1% 0.02 100.6)
-
Step 100
100
#F0EBCB
oklch(93.6% 0.042 99.8)
-
Step 200
200
#E5DB9D
oklch(88.5% 0.081 100.1)
-
Step 300
300 (this color)
#C9B52F
oklch(76.8% 0.146 100.3)
-
Step 400
400
#B6A200
oklch(70.8% 0.147 100.5)
-
Step 500
500
#9C8A00
oklch(63% 0.131 100.1)
-
Step 600
600
#837400
oklch(55.6% 0.116 100.3)
-
Step 700
700
#6E6100
oklch(49% 0.102 100.2)
-
Step 800
800
#5A5000
oklch(42.8% 0.089 101.1)
-
Step 900
900
#4B4200
oklch(37.7% 0.078 100.6)
-
Step 950
950
#2D2700
oklch(27.1% 0.056 100.5)
#C9B52F 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) | #C7B011 | 0.016 |
| Deuteranopia (no green cones) | #CCB739 | 0.009 |
| Tritanopia (no blue cones) | #D9A79C | 0.135 |
| Achromatopsia (no color) | #B4B4B4 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9B52F
#C9B52F
oklch(76.8% 0.146 100.3)
- #A5AAFF
#A5AAFF
oklch(76.7% 0.121 280.5)
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 #C9B52F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard #CEB301 ΔE 0.014
- Olive Yellow #C2B709 ΔE 0.020
- Dark Yellow #D5B60A ΔE 0.021
- Burnt Yellow #D5AB09 ΔE 0.028
- Mustard Yellow #D2BD0A ΔE 0.030
- Muddy Yellow #BFAC05 ΔE 0.031
- Goldenrod #DAA520 ΔE 0.045
- Dark Khaki #BDB76B ΔE 0.049
Use #C9B52F 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.