#C9E571
Closest named color: Dull Yellow (#EEDC5B). oklch(87.7% 0.146 120.7), rgb(201, 229, 113).
Aa
Black text reads best on this color (14.92:1).
About this color
#C9E571 is a light, vivid yellow. In OKLCH its lightness is 88%, its chroma 0.146 and its hue 121°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dull Yellow (#EEDC5B), ΔE 0.050 away. Black text reads best on it, at 14.92:1.
| Hue family | Yellows |
| Lightness | light (88%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Dull Yellow (#EEDC5B) |
| Black text | 14.92:1 |
| White text | 1.40:1 |
Values
| HEX | #C9E571 |
| RGB | rgb(201, 229, 113) |
| HSL | hsl(74, 69%, 67%) |
| OKLCH | oklch(87.7% 0.146 120.7) |
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 #C9E571 | 1.40:1 | Fails | Lc -22.3 | Dividers and decoration only |
| Black text on #C9E571 | 14.92:1 | AAA | Lc 84.1 | Fine for body text |
| #C9E571 text on white | 1.40:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #C9E571 text on black | 14.92:1 | AAA | Lc -83.9 | 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
#F3F8E6
oklch(97.1% 0.024 119.5)
-
Step 100
100
#E4F0C8
oklch(93.6% 0.054 121)
-
Step 200
200 (this color)
#C9E571
oklch(87.7% 0.146 120.7)
-
Step 300
300
#B0D11C
oklch(80.8% 0.187 120.7)
-
Step 400
400
#92AF00
oklch(70.7% 0.169 120.8)
-
Step 500
500
#7D9600
oklch(63.1% 0.151 120.8)
-
Step 600
600
#697E00
oklch(55.6% 0.133 120.6)
-
Step 700
700
#586A00
oklch(49.2% 0.117 120.6)
-
Step 800
800
#475700
oklch(42.8% 0.103 121.1)
-
Step 900
900
#3B4800
oklch(37.7% 0.09 120.7)
-
Step 950
950
#222B00
oklch(27.1% 0.065 121.1)
#C9E571 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) | #F1DA66 | 0.056 |
| Deuteranopia (no green cones) | #EEDA78 | 0.058 |
| Tritanopia (no blue cones) | #D2DBCB | 0.123 |
| Achromatopsia (no color) | #D9D9D9 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9E571
#C9E571
oklch(87.7% 0.146 120.7)
- #DECCFF
#DECCFF
oklch(87.6% 0.072 301)
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 #C9E571, closest first.
No curated palette has a color within ΔE 0.04 of #C9E571.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Yellow #EEDC5B ΔE 0.050
- Pistachio #C0FA8B ΔE 0.052
- Greenish Beige #C9D179 ΔE 0.057
- Pear #CBF85F ΔE 0.057
- Washed Out Green #BCF5A6 ΔE 0.058
- Light Grey Green #B7E1A1 ΔE 0.059
- Light Yellow Green #CCFD7F ΔE 0.061
- Celery #C1FD95 ΔE 0.061
Use #C9E571 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.