#CAC027
Closest named color: Mustard Yellow (#D2BD0A). oklch(79.2% 0.159 105.5), rgb(202, 192, 39).
Aa
Black text reads best on this color (11.08:1).
About this color
#CAC027 is a light, vivid yellow. In OKLCH its lightness is 79%, its chroma 0.159 and its hue 105°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Yellow (#D2BD0A), ΔE 0.013 away. Black text reads best on it, at 11.08:1.
| Hue family | Yellows |
| Lightness | light (79%) |
| Chroma | vivid (0.159) |
| Temperature | warm |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.08:1 |
| White text | 1.89:1 |
Values
| HEX | #CAC027 |
| RGB | rgb(202, 192, 39) |
| HSL | hsl(56, 68%, 47%) |
| OKLCH | oklch(79.2% 0.159 105.5) |
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 #CAC027 | 1.89:1 | Fails | Lc -40.1 | Non-text elements, placeholder text |
| Black text on #CAC027 | 11.08:1 | AAA | Lc 68.0 | Content text, not long reading |
| #CAC027 text on white | 1.89:1 | Fails | Lc 35.9 | Non-text elements, placeholder text |
| #CAC027 text on black | 11.08:1 | AAA | Lc -66.6 | 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
#EEECC9
oklch(93.6% 0.046 104.6)
-
Step 200
200
#E1DD98
oklch(88.5% 0.089 105.2)
-
Step 300
300 (this color)
#CAC027
oklch(79.2% 0.159 105.5)
-
Step 400
400
#AEA500
oklch(70.7% 0.151 105.7)
-
Step 500
500
#958D00
oklch(63% 0.134 105.6)
-
Step 600
600
#7E7600
oklch(55.5% 0.118 104.9)
-
Step 700
700
#696300
oklch(49% 0.104 105.5)
-
Step 800
800
#565100
oklch(42.6% 0.091 105.5)
-
Step 900
900
#484300
oklch(37.6% 0.08 104.8)
-
Step 950
950
#2B2800
oklch(27.1% 0.058 105.3)
#CAC027 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) | #D1B900 | 0.019 |
| Deuteranopia (no green cones) | #D5BF35 | 0.019 |
| Tritanopia (no blue cones) | #D9B2A4 | 0.145 |
| Achromatopsia (no color) | #BCBCBC | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CAC027
#CAC027
oklch(79.2% 0.159 105.5)
- #B4B1FF
#B4B1FF
oklch(79.2% 0.11 285.4)
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 #CAC027, closest first.
No curated palette has a color within ΔE 0.04 of #CAC027.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.013
- Dark Yellow #D5B60A ΔE 0.027
- Olive Yellow #C2B709 ΔE 0.027
- Mustard #CEB301 ΔE 0.032
- Burnt Yellow #D5AB09 ΔE 0.053
- Pea #A4BF20 ΔE 0.054
- Muddy Yellow #BFAC05 ΔE 0.055
- Light Olive Green #A4BE5C ΔE 0.059
Use #CAC027 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.