#C5B428
Closest named color: Mustard (#CEB301). oklch(76.2% 0.149 101.9), rgb(197, 180, 40).
Aa
Black text reads best on this color (9.93:1).
About this color
#C5B428 is a medium-light, vivid yellow. In OKLCH its lightness is 76%, its chroma 0.149 and its hue 102°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard (#CEB301), ΔE 0.015 away. Black text reads best on it, at 9.93:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.149) |
| Temperature | warm |
| Nearest name | Mustard (#CEB301) |
| Black text | 9.93:1 |
| White text | 2.11:1 |
Values
| HEX | #C5B428 |
| RGB | rgb(197, 180, 40) |
| HSL | hsl(54, 66%, 46%) |
| OKLCH | oklch(76.2% 0.149 101.9) |
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 #C5B428 | 2.11:1 | Fails | Lc -45.9 | Large or bold text, headings |
| Black text on #C5B428 | 9.93:1 | AAA | Lc 62.7 | Content text, not long reading |
| #C5B428 text on white | 2.11:1 | Fails | Lc 41.3 | Non-text elements, placeholder text |
| #C5B428 text on black | 9.93:1 | AAA | Lc -61.0 | 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
#EFECCB
oklch(93.7% 0.043 102.9)
-
Step 200
200
#E4DC9C
oklch(88.6% 0.083 101.9)
-
Step 300
300 (this color)
#C5B428
oklch(76.2% 0.149 101.9)
-
Step 400
400
#B4A300
oklch(70.8% 0.148 101.9)
-
Step 500
500
#9A8B00
oklch(63% 0.132 101.8)
-
Step 600
600
#817500
oklch(55.6% 0.117 102.3)
-
Step 700
700
#6D6200
oklch(49.1% 0.103 101.8)
-
Step 800
800
#595000
oklch(42.7% 0.089 102)
-
Step 900
900
#4A4200
oklch(37.6% 0.079 101.6)
-
Step 950
950
#2C2700
oklch(27% 0.057 102.1)
#C5B428 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) | #C5AE00 | 0.016 |
| Deuteranopia (no green cones) | #CAB533 | 0.011 |
| Tritanopia (no blue cones) | #D5A79A | 0.136 |
| Achromatopsia (no color) | #B2B2B2 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C5B428
#C5B428
oklch(76.2% 0.149 101.9)
- #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 #C5B428, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard #CEB301 ΔE 0.015
- Olive Yellow #C2B709 ΔE 0.015
- Muddy Yellow #BFAC05 ΔE 0.024
- Dark Yellow #D5B60A ΔE 0.026
- Burnt Yellow #D5AB09 ΔE 0.030
- Mustard Yellow #D2BD0A ΔE 0.034
- Mustard Green #A8B504 ΔE 0.046
- Goldenrod #DAA520 ΔE 0.047
Use #C5B428 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.