#C4B403
Closest named color: Olive Yellow (#C2B709). oklch(76% 0.159 103), rgb(196, 180, 3).
Aa
Black text reads best on this color (9.87:1).
About this color
#C4B403 is a medium-light, vivid yellow. In OKLCH its lightness is 76%, its chroma 0.159 and its hue 103°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Yellow (#C2B709), ΔE 0.008 away. Black text reads best on it, at 9.87:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.159) |
| Temperature | warm |
| Nearest name | Olive Yellow (#C2B709) |
| Black text | 9.87:1 |
| White text | 2.12:1 |
Values
| HEX | #C4B403 |
| RGB | rgb(196, 180, 3) |
| HSL | hsl(55, 97%, 39%) |
| OKLCH | oklch(76% 0.159 103) |
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 #C4B403 | 2.12:1 | Fails | Lc -46.1 | Large or bold text, headings |
| Black text on #C4B403 | 9.87:1 | AAA | Lc 62.5 | Content text, not long reading |
| #C4B403 text on white | 2.12:1 | Fails | Lc 41.5 | Non-text elements, placeholder text |
| #C4B403 text on black | 9.87:1 | AAA | Lc -60.8 | 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
#F8F6E6
oklch(97% 0.021 101)
-
Step 100
100
#EFECC9
oklch(93.6% 0.046 103.2)
-
Step 200
200
#E3DC97
oklch(88.4% 0.089 103.1)
-
Step 300
300 (this color)
#C4B403
oklch(76% 0.159 103)
-
Step 400
400
#B2A300
oklch(70.6% 0.148 102.9)
-
Step 500
500
#998C00
oklch(63.2% 0.133 102.9)
-
Step 600
600
#807500
oklch(55.5% 0.117 103)
-
Step 700
700
#6C6200
oklch(49% 0.103 102.5)
-
Step 800
800
#585000
oklch(42.6% 0.089 102.9)
-
Step 900
900
#494300
oklch(37.7% 0.08 103.8)
-
Step 950
950
#2C2700
oklch(27% 0.057 102.1)
#C4B403 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 | 0.016 |
| Deuteranopia (no green cones) | #CBB51F | 0.014 |
| Tritanopia (no blue cones) | #D4A699 | 0.146 |
| Achromatopsia (no color) | #B2B2B2 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C4B403
#C4B403
oklch(76% 0.159 103)
- #A6A6FF
#A6A6FF
oklch(76% 0.127 283)
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 #C4B403, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Yellow #C2B709 ΔE 0.008
- Mustard #CEB301 ΔE 0.015
- Muddy Yellow #BFAC05 ΔE 0.023
- Dark Yellow #D5B60A ΔE 0.027
- Mustard Yellow #D2BD0A ΔE 0.033
- Burnt Yellow #D5AB09 ΔE 0.034
- Mustard Green #A8B504 ΔE 0.041
- Pea #A4BF20 ΔE 0.049
Use #C4B403 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.