#C5B239
Closest named color: Mustard (#CEB301). oklch(75.8% 0.138 100.1), rgb(197, 178, 57).
Aa
Black text reads best on this color (9.80:1).
About this color
#C5B239 is a medium-light, moderately saturated yellow. In OKLCH its lightness is 76%, its chroma 0.138 and its hue 100°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard (#CEB301), ΔE 0.023 away. Black text reads best on it, at 9.80:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.138) |
| Temperature | warm |
| Nearest name | Mustard (#CEB301) |
| Black text | 9.80:1 |
| White text | 2.14:1 |
Values
| HEX | #C5B239 |
| RGB | rgb(197, 178, 57) |
| HSL | hsl(52, 55%, 50%) |
| OKLCH | oklch(75.8% 0.138 100.1) |
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 #C5B239 | 2.14:1 | Fails | Lc -46.6 | Large or bold text, headings |
| Black text on #C5B239 | 9.80:1 | AAA | Lc 62.0 | Content text, not long reading |
| #C5B239 text on white | 2.14:1 | Fails | Lc 41.9 | Non-text elements, placeholder text |
| #C5B239 text on black | 9.80:1 | AAA | Lc -60.3 | 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
#F8F6E8
oklch(97.1% 0.019 100.1)
-
Step 100
100
#F0EBCD
oklch(93.6% 0.04 99.3)
-
Step 200
200
#E4DBA0
oklch(88.5% 0.077 100.5)
-
Step 300
300 (this color)
#C5B239
oklch(75.8% 0.138 100.1)
-
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
#5A4F00
oklch(42.5% 0.088 100.1)
-
Step 900
900
#4B4200
oklch(37.7% 0.078 100.6)
-
Step 950
950
#2D2700
oklch(27.1% 0.056 100.5)
#C5B239 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) | #C3AD26 | 0.015 |
| Deuteranopia (no green cones) | #C8B441 | 0.009 |
| Tritanopia (no blue cones) | #D4A59A | 0.127 |
| Achromatopsia (no color) | #B1B1B1 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C5B239
#C5B239
oklch(75.8% 0.138 100.1)
- #A1A7FF
#A1A7FF
oklch(75.8% 0.126 280)
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 #C5B239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard #CEB301 ΔE 0.023
- Muddy Yellow #BFAC05 ΔE 0.026
- Olive Yellow #C2B709 ΔE 0.027
- Burnt Yellow #D5AB09 ΔE 0.028
- Dark Yellow #D5B60A ΔE 0.032
- Goldenrod #DAA520 ΔE 0.042
- Dark Khaki #BDB76B ΔE 0.042
- Mustard Yellow #D2BD0A ΔE 0.042
Use #C5B239 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.