#C9EF71
Closest named color: Pistachio (#C0FA8B). oklch(89.9% 0.159 123.5), rgb(201, 239, 113).
Aa
Black text reads best on this color (16.06:1).
About this color
#C9EF71 is a light, vivid yellow. In OKLCH its lightness is 90%, its chroma 0.159 and its hue 124°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pistachio (#C0FA8B), ΔE 0.031 away. Black text reads best on it, at 16.06:1.
| Hue family | Yellows |
| Lightness | light (90%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Pistachio (#C0FA8B) |
| Black text | 16.06:1 |
| White text | 1.30:1 |
Values
| HEX | #C9EF71 |
| RGB | rgb(201, 239, 113) |
| HSL | hsl(78, 80%, 69%) |
| OKLCH | oklch(89.9% 0.159 123.5) |
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 #C9EF71 | 1.30:1 | Fails | Lc -17.4 | Dividers and decoration only |
| Black text on #C9EF71 | 16.06:1 | AAA | Lc 88.5 | Fine for body text |
| #C9EF71 text on white | 1.30:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #C9EF71 text on black | 16.06:1 | AAA | Lc -88.7 | 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
#F2F9E5
oklch(97.1% 0.027 122.7)
-
Step 100
100
#E2F1C6
oklch(93.6% 0.059 123.2)
-
Step 200
200 (this color)
#C9EF71
oklch(89.9% 0.159 123.5)
-
Step 300
300
#A8D400
oklch(80.9% 0.199 123.4)
-
Step 400
400
#8BB100
oklch(70.6% 0.175 123.7)
-
Step 500
500
#779800
oklch(63.1% 0.156 123.6)
-
Step 600
600
#648000
oklch(55.8% 0.138 123.5)
-
Step 700
700
#536B00
oklch(49% 0.121 123.6)
-
Step 800
800
#445800
oklch(42.8% 0.106 123.5)
-
Step 900
900
#384900
oklch(37.7% 0.093 123.4)
-
Step 950
950
#202B00
oklch(26.9% 0.066 123.3)
#C9EF71 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) | #FBE265 | 0.069 |
| Deuteranopia (no green cones) | #F6E179 | 0.070 |
| Tritanopia (no blue cones) | #D1E5D3 | 0.130 |
| Achromatopsia (no color) | #E1E1E1 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9EF71
#C9EF71
oklch(89.9% 0.159 123.5)
- #E6D5FF
#E6D5FF
oklch(90% 0.059 303.6)
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 #C9EF71, closest first.
No curated palette has a color within ΔE 0.04 of #C9EF71.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pistachio #C0FA8B ΔE 0.031
- Pear #CBF85F ΔE 0.032
- Light Yellow Green #CCFD7F ΔE 0.036
- Light Pea Green #C4FE82 ΔE 0.037
- Pale Lime #BEFD73 ΔE 0.037
- Celery #C1FD95 ΔE 0.042
- Pale Light Green #B1FC99 ΔE 0.045
- Light Lime #AEFD6C ΔE 0.048
Use #C9EF71 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.