#C9EF99
Closest named color: Washed Out Green (#BCF5A6). oklch(90.5% 0.118 128), rgb(201, 239, 153).
Aa
Black text reads best on this color (16.29:1).
About this color
#C9EF99 is a very light, moderately saturated green. In OKLCH its lightness is 91%, its chroma 0.118 and its hue 128°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Washed Out Green (#BCF5A6), ΔE 0.020 away. Black text reads best on it, at 16.29:1.
| Hue family | Greens |
| Lightness | very light (91%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Washed Out Green (#BCF5A6) |
| Black text | 16.29:1 |
| White text | 1.28:1 |
Values
| HEX | #C9EF99 |
| RGB | rgb(201, 239, 153) |
| HSL | hsl(87, 73%, 77%) |
| OKLCH | oklch(90.5% 0.118 128) |
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 #C9EF99 | 1.28:1 | Fails | Lc -16.5 | Dividers and decoration only |
| Black text on #C9EF99 | 16.29:1 | AAA | Lc 89.3 | Fine for body text |
| #C9EF99 text on white | 1.28:1 | Fails | Lc 14.3 | Not readable |
| #C9EF99 text on black | 16.29:1 | AAA | Lc -89.5 | 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
#F1F8EA
oklch(97% 0.02 128.7)
-
Step 100
100
#E1F0D1
oklch(93.6% 0.044 128.4)
-
Step 200
200 (this color)
#C9EF99
oklch(90.5% 0.118 128)
-
Step 300
300
#A4D361
oklch(81% 0.152 128)
-
Step 400
400
#7FB500
oklch(70.8% 0.185 128)
-
Step 500
500
#6C9B00
oklch(63.2% 0.165 128)
-
Step 600
600
#5A8200
oklch(55.6% 0.145 128)
-
Step 700
700
#4B6D00
oklch(49% 0.128 127.9)
-
Step 800
800
#3D5A00
oklch(42.8% 0.112 128.1)
-
Step 900
900
#324B00
oklch(37.8% 0.099 128.2)
-
Step 950
950
#1C2C00
oklch(26.9% 0.07 127.9)
#C9EF99 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) | #F7E493 | 0.063 |
| Deuteranopia (no green cones) | #F2E29D | 0.063 |
| Tritanopia (no blue cones) | #CDE8D9 | 0.091 |
| Achromatopsia (no color) | #E3E3E3 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9EF99
#C9EF99
oklch(90.5% 0.118 128)
- #EBD6FF
#EBD6FF
oklch(90.6% 0.059 308.2)
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 #C9EF99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Washed Out Green #BCF5A6 ΔE 0.020
- Light Sage #BCECAC ΔE 0.029
- Light Pastel Green #B2FBA5 ΔE 0.036
- Pistachio #C0FA8B ΔE 0.039
- Celery #C1FD95 ΔE 0.040
- Light Khaki #E6F2A2 ΔE 0.041
- Celadon #BEFDB7 ΔE 0.041
- Pale Light Green #B1FC99 ΔE 0.042
Use #C9EF99 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.