#C9EE81
Closest named color: Pistachio (#C0FA8B). oklch(89.9% 0.142 124.6), rgb(201, 238, 129).
Aa
Black text reads best on this color (16.03:1).
About this color
#C9EE81 is a light, vivid yellow. In OKLCH its lightness is 90%, its chroma 0.142 and its hue 125°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pistachio (#C0FA8B), ΔE 0.030 away. Black text reads best on it, at 16.03:1.
| Hue family | Yellows |
| Lightness | light (90%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Pistachio (#C0FA8B) |
| Black text | 16.03:1 |
| White text | 1.31:1 |
Values
| HEX | #C9EE81 |
| RGB | rgb(201, 238, 129) |
| HSL | hsl(80, 76%, 72%) |
| OKLCH | oklch(89.9% 0.142 124.6) |
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 #C9EE81 | 1.31:1 | Fails | Lc -17.5 | Dividers and decoration only |
| Black text on #C9EE81 | 16.03:1 | AAA | Lc 88.4 | Fine for body text |
| #C9EE81 text on white | 1.31:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #C9EE81 text on black | 16.03:1 | AAA | Lc -88.5 | Fine for body text |
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 200.
-
Step 50
50
#F2F9E7
oklch(97.2% 0.025 124.3)
-
Step 100
100
#E2F1CA
oklch(93.7% 0.054 124.6)
-
Step 200
200 (this color)
#C9EE81
oklch(89.9% 0.142 124.6)
-
Step 300
300
#A7D437
oklch(81% 0.183 124.7)
-
Step 400
400
#89B200
oklch(70.8% 0.177 124.5)
-
Step 500
500
#759800
oklch(63% 0.157 124.4)
-
Step 600
600
#628000
oklch(55.6% 0.139 124.4)
-
Step 700
700
#526C00
oklch(49.2% 0.123 124.5)
-
Step 800
800
#425800
oklch(42.6% 0.107 124.6)
-
Step 900
900
#374900
oklch(37.6% 0.094 124.1)
-
Step 950
950
#1F2C00
oklch(27.1% 0.068 125.1)
#C9EE81 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) | #F9E278 | 0.066 |
| Deuteranopia (no green cones) | #F3E087 | 0.066 |
| Tritanopia (no blue cones) | #D0E5D4 | 0.114 |
| Achromatopsia (no color) | #E1E1E1 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9EE81
#C9EE81
oklch(89.9% 0.142 124.6)
- #E7D4FF
#E7D4FF
oklch(89.9% 0.061 305.2)
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 #C9EE81, closest first.
No curated palette has a color within ΔE 0.04 of #C9EE81.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pistachio #C0FA8B ΔE 0.030
- Celery #C1FD95 ΔE 0.038
- Washed Out Green #BCF5A6 ΔE 0.039
- Pale Light Green #B1FC99 ΔE 0.041
- Light Yellow Green #CCFD7F ΔE 0.041
- Light Pea Green #C4FE82 ΔE 0.042
- Light Pastel Green #B2FBA5 ΔE 0.044
- Pear #CBF85F ΔE 0.047
Use #C9EE81 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.