#C6C537
Closest named color: Mustard Yellow (#D2BD0A). oklch(80% 0.156 109.1), rgb(198, 197, 55).
Aa
Black text reads best on this color (11.44:1).
About this color
#C6C537 is a light, vivid yellow. In OKLCH its lightness is 80%, its chroma 0.156 and its hue 109°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Yellow (#D2BD0A), ΔE 0.025 away. Black text reads best on it, at 11.44:1.
| Hue family | Yellows |
| Lightness | light (80%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.44:1 |
| White text | 1.83:1 |
Values
| HEX | #C6C537 |
| RGB | rgb(198, 197, 55) |
| HSL | hsl(60, 57%, 50%) |
| OKLCH | oklch(80% 0.156 109.1) |
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 #C6C537 | 1.83:1 | Fails | Lc -38.4 | Non-text elements, placeholder text |
| Black text on #C6C537 | 11.44:1 | AAA | Lc 69.6 | Content text, not long reading |
| #C6C537 text on white | 1.83:1 | Fails | Lc 34.3 | Non-text elements, placeholder text |
| #C6C537 text on black | 11.44:1 | AAA | Lc -68.3 | 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
#F6F7E7
oklch(97.1% 0.021 109.7)
-
Step 100
100
#ECEDCB
oklch(93.7% 0.045 108.6)
-
Step 200
200
#DDDE9B
oklch(88.4% 0.086 108.8)
-
Step 300
300 (this color)
#C6C537
oklch(80% 0.156 109.1)
-
Step 400
400
#A9A700
oklch(70.7% 0.153 108.9)
-
Step 500
500
#918F00
oklch(63.1% 0.137 108.8)
-
Step 600
600
#797800
oklch(55.5% 0.121 109.2)
-
Step 700
700
#666500
oklch(49.1% 0.107 109.1)
-
Step 800
800
#535200
oklch(42.6% 0.092 108.9)
-
Step 900
900
#454500
oklch(37.8% 0.082 109.8)
-
Step 950
950
#292800
oklch(26.9% 0.058 108.3)
#C6C537 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) | #D5BD1B | 0.027 |
| Deuteranopia (no green cones) | #D7C142 | 0.029 |
| Tritanopia (no blue cones) | #D4B8AA | 0.142 |
| Achromatopsia (no color) | #BFBFBF | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C6C537
#C6C537
oklch(80% 0.156 109.1)
- #BBB2FF
#BBB2FF
oklch(79.9% 0.108 289.1)
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 #C6C537, closest first.
No curated palette has a color within ΔE 0.04 of #C6C537.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.025
- Olive Yellow #C2B709 ΔE 0.037
- Dark Yellow #D5B60A ΔE 0.040
- Mustard #CEB301 ΔE 0.044
- Pea #A4BF20 ΔE 0.054
- Greenish Tan #BCCB7A ΔE 0.055
- Light Olive #ACBF69 ΔE 0.057
- Greenish Beige #C9D179 ΔE 0.057
Use #C6C537 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.