#C1C538
Closest named color: Mustard Yellow (#D2BD0A). oklch(79.6% 0.157 111.1), rgb(193, 197, 56).
Aa
Black text reads best on this color (11.31:1).
About this color
#C1C538 is a light, vivid yellow. In OKLCH its lightness is 80%, its chroma 0.157 and its hue 111°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mustard Yellow (#D2BD0A), ΔE 0.029 away. Black text reads best on it, at 11.31:1.
| Hue family | Yellows |
| Lightness | light (80%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.31:1 |
| White text | 1.85:1 |
Values
| HEX | #C1C538 |
| RGB | rgb(193, 197, 56) |
| HSL | hsl(62, 56%, 50%) |
| OKLCH | oklch(79.6% 0.157 111.1) |
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 #C1C538 | 1.85:1 | Fails | Lc -39.0 | Non-text elements, placeholder text |
| Black text on #C1C538 | 11.31:1 | AAA | Lc 69.0 | Content text, not long reading |
| #C1C538 text on white | 1.85:1 | Fails | Lc 34.9 | Non-text elements, placeholder text |
| #C1C538 text on black | 11.31:1 | AAA | Lc -67.7 | 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
#EAEDCB
oklch(93.5% 0.045 111.4)
-
Step 200
200
#DBDF9C
oklch(88.5% 0.087 110.9)
-
Step 300
300 (this color)
#C1C538
oklch(79.6% 0.157 111.1)
-
Step 400
400
#A5A800
oklch(70.6% 0.155 111.1)
-
Step 500
500
#8E9000
oklch(63.1% 0.138 110.8)
-
Step 600
600
#777900
oklch(55.6% 0.122 110.9)
-
Step 700
700
#646600
oklch(49.2% 0.108 111.1)
-
Step 800
800
#515300
oklch(42.6% 0.094 111.4)
-
Step 900
900
#444500
oklch(37.7% 0.083 110.7)
-
Step 950
950
#282900
oklch(27.1% 0.06 111.2)
#C1C538 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) | #D4BC1E | 0.032 |
| Deuteranopia (no green cones) | #D5C043 | 0.034 |
| Tritanopia (no blue cones) | #CEB9AA | 0.140 |
| Achromatopsia (no color) | #BEBEBE | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C1C538
#C1C538
oklch(79.6% 0.157 111.1)
- #BCB0FF
#BCB0FF
oklch(79.6% 0.111 290.6)
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 #C1C538, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.029
- Olive Yellow #C2B709 ΔE 0.036
- Dark Yellow #D5B60A ΔE 0.043
- Mustard #CEB301 ΔE 0.046
- Pea #A4BF20 ΔE 0.047
- Light Olive Green #A4BE5C ΔE 0.052
- Light Olive #ACBF69 ΔE 0.053
- Yellow Green #9ACD32 ΔE 0.054
Use #C1C538 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.