#C9DE66
Closest named color: Greenish Beige (#C9D179). oklch(86.1% 0.147 117.9), rgb(201, 222, 102).
Aa
Black text reads best on this color (14.12:1).
About this color
#C9DE66 is a light, vivid yellow. In OKLCH its lightness is 86%, its chroma 0.147 and its hue 118°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenish Beige (#C9D179), ΔE 0.045 away. Black text reads best on it, at 14.12:1.
| Hue family | Yellows |
| Lightness | light (86%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Greenish Beige (#C9D179) |
| Black text | 14.12:1 |
| White text | 1.48:1 |
Values
| HEX | #C9DE66 |
| RGB | rgb(201, 222, 102) |
| HSL | hsl(71, 65%, 64%) |
| OKLCH | oklch(86.1% 0.147 117.9) |
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 #C9DE66 | 1.48:1 | Fails | Lc -25.9 | Dividers and decoration only |
| Black text on #C9DE66 | 14.12:1 | AAA | Lc 80.9 | Fine for body text |
| #C9DE66 text on white | 1.48:1 | Fails | Lc 22.8 | Dividers and decoration only |
| #C9DE66 text on black | 14.12:1 | AAA | Lc -80.4 | 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
#F4F8E5
oklch(97.1% 0.025 116.5)
-
Step 100
100
#E6EFC6
oklch(93.5% 0.055 117.5)
-
Step 200
200 (this color)
#C9DE66
oklch(86.1% 0.147 117.9)
-
Step 300
300
#B7CF00
oklch(80.8% 0.188 117.8)
-
Step 400
400
#99AD00
oklch(70.7% 0.164 117.7)
-
Step 500
500
#839400
oklch(63.1% 0.146 117.6)
-
Step 600
600
#6D7C00
oklch(55.4% 0.129 117.8)
-
Step 700
700
#5C6900
oklch(49.2% 0.114 117.9)
-
Step 800
800
#4B5600
oklch(42.8% 0.1 117.9)
-
Step 900
900
#3E4700
oklch(37.7% 0.087 117.6)
-
Step 950
950
#242A00
oklch(27% 0.063 117.7)
#C9DE66 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) | #EBD35A | 0.050 |
| Deuteranopia (no green cones) | #E9D46D | 0.052 |
| Tritanopia (no blue cones) | #D3D3C3 | 0.126 |
| Achromatopsia (no color) | #D4D4D4 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9DE66
#C9DE66
oklch(86.1% 0.147 117.9)
- #D7C7FF
#D7C7FF
oklch(86.1% 0.078 297.8)
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 #C9DE66, closest first.
No curated palette has a color within ΔE 0.04 of #C9DE66.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenish Beige #C9D179 ΔE 0.045
- Dull Yellow #EEDC5B ΔE 0.049
- Pale Olive Green #B1D27B ΔE 0.053
- Light Grey Green #B7E1A1 ΔE 0.062
- Sandy #F1DA7A ΔE 0.063
- Greenish Tan #BCCB7A ΔE 0.064
- Maize #F4D054 ΔE 0.064
- Light Mustard #F7D560 ΔE 0.065
Use #C9DE66 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.