#C9BF41
Closest named color: Mustard Yellow (#D2BD0A). oklch(79% 0.144 104.8), rgb(201, 191, 65).
Aa
Black text reads best on this color (11.01:1).
About this color
#C9BF41 is a light, vivid yellow. In OKLCH its lightness is 79%, its chroma 0.144 and its hue 105°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Yellow (#D2BD0A), ΔE 0.022 away. Black text reads best on it, at 11.01:1.
| Hue family | Yellows |
| Lightness | light (79%) |
| Chroma | vivid (0.144) |
| Temperature | warm |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.01:1 |
| White text | 1.90:1 |
Values
| HEX | #C9BF41 |
| RGB | rgb(201, 191, 65) |
| HSL | hsl(56, 56%, 52%) |
| OKLCH | oklch(79% 0.144 104.8) |
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 #C9BF41 | 1.90:1 | Fails | Lc -40.5 | Non-text elements, placeholder text |
| Black text on #C9BF41 | 11.01:1 | AAA | Lc 67.6 | Content text, not long reading |
| #C9BF41 text on white | 1.90:1 | Fails | Lc 36.2 | Non-text elements, placeholder text |
| #C9BF41 text on black | 11.01:1 | AAA | Lc -66.2 | 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
#F7F6E8
oklch(97% 0.018 103.4)
-
Step 100
100
#EEECCC
oklch(93.6% 0.042 104.2)
-
Step 200
200
#E1DD9F
oklch(88.6% 0.08 104.8)
-
Step 300
300 (this color)
#C9BF41
oklch(79% 0.144 104.8)
-
Step 400
400
#B0A400
oklch(70.6% 0.149 104.3)
-
Step 500
500
#968D00
oklch(63.1% 0.134 105.1)
-
Step 600
600
#7E7600
oklch(55.5% 0.118 104.9)
-
Step 700
700
#6A6300
oklch(49.1% 0.104 104.8)
-
Step 800
800
#575100
oklch(42.7% 0.09 104.7)
-
Step 900
900
#484300
oklch(37.6% 0.08 104.8)
-
Step 950
950
#2B2800
oklch(27.1% 0.058 105.3)
#C9BF41 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) | #CFB82F | 0.018 |
| Deuteranopia (no green cones) | #D3BE49 | 0.017 |
| Tritanopia (no blue cones) | #D8B2A6 | 0.132 |
| Achromatopsia (no color) | #BCBCBC | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9BF41
#C9BF41
oklch(79% 0.144 104.8)
- #B3B1FF
#B3B1FF
oklch(79.1% 0.11 284.8)
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 #C9BF41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.022
- Dark Yellow #D5B60A ΔE 0.029
- Olive Yellow #C2B709 ΔE 0.031
- Mustard #CEB301 ΔE 0.033
- Light Olive #ACBF69 ΔE 0.048
- Burnt Yellow #D5AB09 ΔE 0.050
- Dark Khaki #BDB76B ΔE 0.051
- Greenish Tan #BCCB7A ΔE 0.051
Use #C9BF41 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.