#CDC73B
Closest named color: Mustard Yellow (#D2BD0A). oklch(81% 0.154 106.9), rgb(205, 199, 59).
Aa
Black text reads best on this color (11.82:1).
About this color
#CDC73B is a light, vivid yellow. In OKLCH its lightness is 81%, its chroma 0.154 and its hue 107°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Yellow (#D2BD0A), ΔE 0.026 away. Black text reads best on it, at 11.82:1.
| Hue family | Yellows |
| Lightness | light (81%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.82:1 |
| White text | 1.77:1 |
Values
| HEX | #CDC73B |
| RGB | rgb(205, 199, 59) |
| HSL | hsl(58, 59%, 52%) |
| OKLCH | oklch(81% 0.154 106.9) |
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 #CDC73B | 1.77:1 | Fails | Lc -36.5 | Non-text elements, placeholder text |
| Black text on #CDC73B | 11.82:1 | AAA | Lc 71.3 | Content text, not long reading |
| #CDC73B text on white | 1.77:1 | Fails | Lc 32.6 | Non-text elements, placeholder text |
| #CDC73B text on black | 11.82:1 | AAA | Lc -70.1 | 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
#F7F7E7
oklch(97.2% 0.021 106.8)
-
Step 100
100
#EDECCB
oklch(93.5% 0.043 105.8)
-
Step 200
200
#DFDE9B
oklch(88.6% 0.086 107.3)
-
Step 300
300 (this color)
#CDC73B
oklch(81% 0.154 106.9)
-
Step 400
400
#ACA600
oklch(70.7% 0.152 107.1)
-
Step 500
500
#948E00
oklch(63.1% 0.135 106.7)
-
Step 600
600
#7C7700
oklch(55.6% 0.119 106.8)
-
Step 700
700
#686400
oklch(49.1% 0.105 107)
-
Step 800
800
#555200
oklch(42.8% 0.092 107.3)
-
Step 900
900
#474400
oklch(37.7% 0.081 106.8)
-
Step 950
950
#2A2800
oklch(27% 0.058 106.8)
#CDC73B 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) | #D8BF22 | 0.023 |
| Deuteranopia (no green cones) | #DBC545 | 0.024 |
| Tritanopia (no blue cones) | #DCBAAC | 0.140 |
| Achromatopsia (no color) | #C2C2C2 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CDC73B
#CDC73B
oklch(81% 0.154 106.9)
- #BCB7FF
#BCB7FF
oklch(80.9% 0.101 287.1)
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 #CDC73B, closest first.
No curated palette has a color within ΔE 0.04 of #CDC73B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.026
- Dark Yellow #D5B60A ΔE 0.042
- Olive Yellow #C2B709 ΔE 0.047
- Mustard #CEB301 ΔE 0.050
- Greenish Beige #C9D179 ΔE 0.051
- Greenish Tan #BCCB7A ΔE 0.054
- Pale Olive Green #B1D27B ΔE 0.058
- Golden #F5BF03 ΔE 0.059
Use #CDC73B 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.