#CBC040
Closest named color: Mustard Yellow (#D2BD0A). oklch(79.4% 0.145 104.4), rgb(203, 192, 64).
Aa
Black text reads best on this color (11.15:1).
About this color
#CBC040 is a light, vivid yellow. In OKLCH its lightness is 79%, its chroma 0.145 and its hue 104°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Yellow (#D2BD0A), ΔE 0.021 away. Black text reads best on it, at 11.15:1.
| Hue family | Yellows |
| Lightness | light (79%) |
| Chroma | vivid (0.145) |
| Temperature | warm |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.15:1 |
| White text | 1.88:1 |
Values
| HEX | #CBC040 |
| RGB | rgb(203, 192, 64) |
| HSL | hsl(55, 57%, 52%) |
| OKLCH | oklch(79.4% 0.145 104.4) |
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 #CBC040 | 1.88:1 | Fails | Lc -39.8 | Non-text elements, placeholder text |
| Black text on #CBC040 | 11.15:1 | AAA | Lc 68.3 | Content text, not long reading |
| #CBC040 text on white | 1.88:1 | Fails | Lc 35.6 | Non-text elements, placeholder text |
| #CBC040 text on black | 11.15:1 | AAA | Lc -66.9 | 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
#F7F6E8
oklch(97% 0.018 103.4)
-
Step 100
100
#EEECCC
oklch(93.6% 0.042 104.2)
-
Step 200
200
#E1DD9E
oklch(88.6% 0.081 104.9)
-
Step 300
300 (this color)
#CBC040
oklch(79.4% 0.145 104.4)
-
Step 400
400
#B0A400
oklch(70.6% 0.149 104.3)
-
Step 500
500
#978D00
oklch(63.2% 0.134 104.6)
-
Step 600
600
#7F7600
oklch(55.6% 0.118 104.3)
-
Step 700
700
#6A6300
oklch(49.1% 0.104 104.8)
-
Step 800
800
#575100
oklch(42.7% 0.09 104.7)
-
Step 900
900
#494300
oklch(37.7% 0.08 103.8)
-
Step 950
950
#2B2700
oklch(26.9% 0.057 103.7)
#CBC040 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) | #D1B92D | 0.018 |
| Deuteranopia (no green cones) | #D4C048 | 0.016 |
| Tritanopia (no blue cones) | #DAB3A6 | 0.132 |
| Achromatopsia (no color) | #BDBDBD | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CBC040
#CBC040
oklch(79.4% 0.145 104.4)
- #B4B2FF
#B4B2FF
oklch(79.4% 0.108 284.8)
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 #CBC040, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.021
- Dark Yellow #D5B60A ΔE 0.029
- Olive Yellow #C2B709 ΔE 0.034
- Mustard #CEB301 ΔE 0.034
- Greenish Tan #BCCB7A ΔE 0.051
- Light Olive #ACBF69 ΔE 0.051
- Burnt Yellow #D5AB09 ΔE 0.051
- Dark Khaki #BDB76B ΔE 0.054
Use #CBC040 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.