#C5B41B
Closest named color: Olive Yellow (#C2B709). oklch(76.1% 0.154 102.3), rgb(197, 180, 27).
Aa
Black text reads best on this color (9.91:1).
About this color
#C5B41B is a medium-light, vivid yellow. In OKLCH its lightness is 76%, its chroma 0.154 and its hue 102°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Yellow (#C2B709), ΔE 0.011 away. Black text reads best on it, at 9.91:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Olive Yellow (#C2B709) |
| Black text | 9.91:1 |
| White text | 2.11:1 |
Values
| HEX | #C5B41B |
| RGB | rgb(197, 180, 27) |
| HSL | hsl(54, 76%, 44%) |
| OKLCH | oklch(76.1% 0.154 102.3) |
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 #C5B41B | 2.11:1 | Fails | Lc -46.0 | Large or bold text, headings |
| Black text on #C5B41B | 9.91:1 | AAA | Lc 62.6 | Content text, not long reading |
| #C5B41B text on white | 2.11:1 | Fails | Lc 41.3 | Non-text elements, placeholder text |
| #C5B41B text on black | 9.91:1 | AAA | Lc -60.9 | 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
#EFECCA
oklch(93.7% 0.045 103.1)
-
Step 200
200
#E4DC9A
oklch(88.5% 0.085 102.1)
-
Step 300
300 (this color)
#C5B41B
oklch(76.1% 0.154 102.3)
-
Step 400
400
#B3A300
oklch(70.7% 0.148 102.4)
-
Step 500
500
#9A8B00
oklch(63% 0.132 101.8)
-
Step 600
600
#817500
oklch(55.6% 0.117 102.3)
-
Step 700
700
#6C6200
oklch(49% 0.103 102.5)
-
Step 800
800
#595000
oklch(42.7% 0.089 102)
-
Step 900
900
#4A4300
oklch(37.8% 0.079 102.7)
-
Step 950
950
#2C2700
oklch(27% 0.057 102.1)
#C5B41B 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) | #C6AE00 | 0.015 |
| Deuteranopia (no green cones) | #CBB52A | 0.012 |
| Tritanopia (no blue cones) | #D5A69A | 0.142 |
| Achromatopsia (no color) | #B2B2B2 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C5B41B
#C5B41B
oklch(76.1% 0.154 102.3)
- #A5A7FF
#A5A7FF
oklch(76.1% 0.125 282)
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 #C5B41B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Yellow #C2B709 ΔE 0.011
- Mustard #CEB301 ΔE 0.013
- Muddy Yellow #BFAC05 ΔE 0.023
- Dark Yellow #D5B60A ΔE 0.025
- Burnt Yellow #D5AB09 ΔE 0.031
- Mustard Yellow #D2BD0A ΔE 0.032
- Mustard Green #A8B504 ΔE 0.044
- Goldenrod #DAA520 ΔE 0.049
Use #C5B41B 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.