#C9C142
Closest named color: Mustard Yellow (#D2BD0A). oklch(79.5% 0.145 105.7), rgb(201, 193, 66).
Aa
Black text reads best on this color (11.19:1).
About this color
#C9C142 is a light, vivid yellow. In OKLCH its lightness is 79%, its chroma 0.145 and its hue 106°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Yellow (#D2BD0A), ΔE 0.023 away. Black text reads best on it, at 11.19:1.
| Hue family | Yellows |
| Lightness | light (79%) |
| Chroma | vivid (0.145) |
| Temperature | warm |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.19:1 |
| White text | 1.87:1 |
Values
| HEX | #C9C142 |
| RGB | rgb(201, 193, 66) |
| HSL | hsl(56, 56%, 52%) |
| OKLCH | oklch(79.5% 0.145 105.7) |
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 #C9C142 | 1.87:1 | Fails | Lc -39.7 | Non-text elements, placeholder text |
| Black text on #C9C142 | 11.19:1 | AAA | Lc 68.4 | Content text, not long reading |
| #C9C142 text on white | 1.87:1 | Fails | Lc 35.4 | Non-text elements, placeholder text |
| #C9C142 text on black | 11.19:1 | AAA | Lc -67.1 | 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
#F7F7E8
oklch(97.2% 0.02 106.8)
-
Step 100
100
#EDECCC
oklch(93.6% 0.042 105.7)
-
Step 200
200
#E0DD9F
oklch(88.5% 0.08 105.6)
-
Step 300
300 (this color)
#C9C142
oklch(79.5% 0.145 105.7)
-
Step 400
400
#AEA500
oklch(70.7% 0.151 105.7)
-
Step 500
500
#958D00
oklch(63% 0.134 105.6)
-
Step 600
600
#7D7700
oklch(55.7% 0.119 106.2)
-
Step 700
700
#696400
oklch(49.2% 0.105 106.3)
-
Step 800
800
#565100
oklch(42.6% 0.091 105.5)
-
Step 900
900
#484400
oklch(37.8% 0.081 105.9)
-
Step 950
950
#2A2800
oklch(27% 0.058 106.8)
#C9C142 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) | #D1BA30 | 0.019 |
| Deuteranopia (no green cones) | #D4C04A | 0.019 |
| Tritanopia (no blue cones) | #D7B4A7 | 0.132 |
| Achromatopsia (no color) | #BDBDBD | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9C142
#C9C142
oklch(79.5% 0.145 105.7)
- #B5B2FF
#B5B2FF
oklch(79.4% 0.108 285.4)
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 #C9C142, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.023
- Dark Yellow #D5B60A ΔE 0.032
- Olive Yellow #C2B709 ΔE 0.034
- Mustard #CEB301 ΔE 0.037
- Greenish Tan #BCCB7A ΔE 0.049
- Light Olive #ACBF69 ΔE 0.050
- Light Olive Green #A4BE5C ΔE 0.053
- Dark Khaki #BDB76B ΔE 0.054
Use #C9C142 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.