#C5C840
Closest named color: Mustard Yellow (#D2BD0A). oklch(80.6% 0.154 110.6), rgb(197, 200, 64).
Aa
Black text reads best on this color (11.70:1).
About this color
#C5C840 is a light, vivid yellow. In OKLCH its lightness is 81%, its chroma 0.154 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 0.031 away. Black text reads best on it, at 11.70:1.
| Hue family | Yellows |
| Lightness | light (81%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.70:1 |
| White text | 1.79:1 |
Values
| HEX | #C5C840 |
| RGB | rgb(197, 200, 64) |
| HSL | hsl(61, 55%, 52%) |
| OKLCH | oklch(80.6% 0.154 110.6) |
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 #C5C840 | 1.79:1 | Fails | Lc -37.1 | Non-text elements, placeholder text |
| Black text on #C5C840 | 11.70:1 | AAA | Lc 70.8 | Content text, not long reading |
| #C5C840 text on white | 1.79:1 | Fails | Lc 33.1 | Non-text elements, placeholder text |
| #C5C840 text on black | 11.70:1 | AAA | Lc -69.5 | 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
#EBEDCB
oklch(93.6% 0.045 110)
-
Step 200
200
#DBDF9D
oklch(88.5% 0.086 110.9)
-
Step 300
300 (this color)
#C5C840
oklch(80.6% 0.154 110.6)
-
Step 400
400
#A6A800
oklch(70.6% 0.155 110.6)
-
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
#646500
oklch(49% 0.107 110.5)
-
Step 800
800
#525300
oklch(42.7% 0.094 110.6)
-
Step 900
900
#444500
oklch(37.7% 0.083 110.7)
-
Step 950
950
#282900
oklch(27.1% 0.06 111.2)
#C5C840 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) | #D7BF2B | 0.031 |
| Deuteranopia (no green cones) | #D9C34A | 0.034 |
| Tritanopia (no blue cones) | #D2BCAD | 0.137 |
| Achromatopsia (no color) | #C1C1C1 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C5C840
#C5C840
oklch(80.6% 0.154 110.6)
- #BFB4FF
#BFB4FF
oklch(80.6% 0.105 290.6)
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 #C5C840, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.031
- Olive Yellow #C2B709 ΔE 0.045
- Dark Yellow #D5B60A ΔE 0.047
- Greenish Tan #BCCB7A ΔE 0.050
- Greenish Beige #C9D179 ΔE 0.051
- Pale Olive Green #B1D27B ΔE 0.052
- Mustard #CEB301 ΔE 0.052
- Light Moss Green #A6C875 ΔE 0.057
Use #C5C840 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.