#C9DE99
Closest named color: Light Grey Green (#B7E1A1). oklch(86.8% 0.093 122.1), rgb(201, 222, 153).
Aa
Black text reads best on this color (14.39:1).
About this color
#C9DE99 is a light, moderately saturated yellow. In OKLCH its lightness is 87%, its chroma 0.093 and its hue 122°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Grey Green (#B7E1A1), ΔE 0.022 away. Black text reads best on it, at 14.39:1.
| Hue family | Yellows |
| Lightness | light (87%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Light Grey Green (#B7E1A1) |
| Black text | 14.39:1 |
| White text | 1.45:1 |
Values
| HEX | #C9DE99 |
| RGB | rgb(201, 222, 153) |
| HSL | hsl(78, 51%, 74%) |
| OKLCH | oklch(86.8% 0.093 122.1) |
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 #C9DE99 | 1.45:1 | Fails | Lc -24.8 | Dividers and decoration only |
| Black text on #C9DE99 | 14.39:1 | AAA | Lc 81.9 | Fine for body text |
| #C9DE99 text on white | 1.45:1 | Fails | Lc 21.8 | Dividers and decoration only |
| #C9DE99 text on black | 14.39:1 | AAA | Lc -81.5 | 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
#F3F7EC
oklch(97% 0.015 123)
-
Step 100
100
#E6EED5
oklch(93.6% 0.034 121.5)
-
Step 200
200 (this color)
#C9DE99
oklch(86.8% 0.093 122.1)
-
Step 300
300
#B3CD73
oklch(80.9% 0.12 122.3)
-
Step 400
400
#8FB000
oklch(70.7% 0.172 122.1)
-
Step 500
500
#7A9700
oklch(63.1% 0.154 122.2)
-
Step 600
600
#667F00
oklch(55.6% 0.135 122.3)
-
Step 700
700
#566A00
oklch(49% 0.118 121.7)
-
Step 800
800
#465700
oklch(42.7% 0.103 121.8)
-
Step 900
900
#3A4900
oklch(37.9% 0.092 122)
-
Step 950
950
#212B00
oklch(27% 0.066 122.2)
#C9DE99 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) | #E6D694 | 0.041 |
| Deuteranopia (no green cones) | #E3D69C | 0.041 |
| Tritanopia (no blue cones) | #CED7CC | 0.076 |
| Achromatopsia (no color) | #D6D6D6 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9DE99
#C9DE99
oklch(86.8% 0.093 122.1)
- #DDC8FF
#DDC8FF
oklch(86.8% 0.078 302.2)
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 #C9DE99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Green #B7E1A1 ΔE 0.022
- Light Sage #BCECAC ΔE 0.037
- Tea Green #CAE7B9 ΔE 0.040
- Greenish Beige #C9D179 ΔE 0.042
- Vanilla #E9D8A6 ΔE 0.051
- Hospital Green #9BE5AA ΔE 0.053
- Pale Olive Green #B1D27B ΔE 0.055
- Pale Olive #B9CC81 ΔE 0.056
Use #C9DE99 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.