#CBB203
Closest named color: Mustard (#CEB301). oklch(76.2% 0.157 99), rgb(203, 178, 3).
Aa
Black text reads best on this color (9.90:1).
About this color
#CBB203 is a medium-light, vivid yellow. In OKLCH its lightness is 76%, its chroma 0.157 and its hue 99°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard (#CEB301), ΔE 0.005 away. Black text reads best on it, at 9.90:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.157) |
| Temperature | warm |
| Nearest name | Mustard (#CEB301) |
| Black text | 9.90:1 |
| White text | 2.11:1 |
Values
| HEX | #CBB203 |
| RGB | rgb(203, 178, 3) |
| HSL | hsl(53, 97%, 40%) |
| OKLCH | oklch(76.2% 0.157 99) |
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 #CBB203 | 2.11:1 | Fails | Lc -46.0 | Large or bold text, headings |
| Black text on #CBB203 | 9.90:1 | AAA | Lc 62.6 | Content text, not long reading |
| #CBB203 text on white | 2.11:1 | Fails | Lc 41.3 | Non-text elements, placeholder text |
| #CBB203 text on black | 9.90:1 | 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
#F9F6E6
oklch(97.1% 0.021 98.1)
-
Step 100
100
#F1EBC9
oklch(93.6% 0.045 98.9)
-
Step 200
200
#E7DB97
oklch(88.5% 0.088 99.4)
-
Step 300
300 (this color)
#CBB203
oklch(76.2% 0.157 99)
-
Step 400
400
#B8A100
oklch(70.8% 0.147 99)
-
Step 500
500
#9D8A00
oklch(63.1% 0.131 99.5)
-
Step 600
600
#847300
oklch(55.5% 0.115 98.9)
-
Step 700
700
#6F6100
oklch(49.1% 0.102 99.4)
-
Step 800
800
#5B4F00
oklch(42.7% 0.088 99.2)
-
Step 900
900
#4C4200
oklch(37.8% 0.078 99.5)
-
Step 950
950
#2D2600
oklch(26.8% 0.056 98.7)
#CBB203 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) | #C5AD00 | 0.017 |
| Deuteranopia (no green cones) | #CCB61E | 0.011 |
| Tritanopia (no blue cones) | #DCA397 | 0.145 |
| Achromatopsia (no color) | #B2B2B2 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CBB203
#CBB203
oklch(76.2% 0.157 99)
- #A1A9FF
#A1A9FF
oklch(76.2% 0.123 279)
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 #CBB203, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard #CEB301 ΔE 0.005
- Olive Yellow #C2B709 ΔE 0.018
- Dark Yellow #D5B60A ΔE 0.019
- Burnt Yellow #D5AB09 ΔE 0.023
- Muddy Yellow #BFAC05 ΔE 0.025
- Mustard Yellow #D2BD0A ΔE 0.031
- Goldenrod #DAA520 ΔE 0.042
- Mustard Green #A8B504 ΔE 0.051
Use #CBB203 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.