#81CE99
Closest named color: Medium Aquamarine (#66CDAA). oklch(78.7% 0.108 153.3), rgb(129, 206, 153).
Aa
Black text reads best on this color (11.22:1).
About this color
#81CE99 is a light, moderately saturated green. In OKLCH its lightness is 79%, its chroma 0.108 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.031 away. Black text reads best on it, at 11.22:1.
| Hue family | Greens |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 11.22:1 |
| White text | 1.87:1 |
Values
| HEX | #81CE99 |
| RGB | rgb(129, 206, 153) |
| HSL | hsl(139, 44%, 66%) |
| OKLCH | oklch(78.7% 0.108 153.3) |
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 #81CE99 | 1.87:1 | Fails | Lc -39.5 | Non-text elements, placeholder text |
| Black text on #81CE99 | 11.22:1 | AAA | Lc 68.6 | Content text, not long reading |
| #81CE99 text on white | 1.87:1 | Fails | Lc 35.3 | Non-text elements, placeholder text |
| #81CE99 text on black | 11.22:1 | AAA | Lc -67.2 | Content text, not long reading |
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 300.
-
Step 50
50
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DBF0E0
oklch(93.5% 0.031 152.9)
-
Step 200
200
#BCE5C7
oklch(88.5% 0.059 153.3)
-
Step 300
300 (this color)
#81CE99
oklch(78.7% 0.108 153.3)
-
Step 400
400
#22BE6B
oklch(70.6% 0.172 153.4)
-
Step 500
500
#00A458
oklch(63% 0.161 153.3)
-
Step 600
600
#008A49
oklch(55.5% 0.142 153.3)
-
Step 700
700
#00743D
oklch(49% 0.125 153.5)
-
Step 800
800
#005F31
oklch(42.6% 0.108 153.6)
-
Step 900
900
#005028
oklch(37.8% 0.097 153.4)
-
Step 950
950
#003015
oklch(27.1% 0.07 152.9)
#81CE99 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) | #CEC296 | 0.096 |
| Deuteranopia (no green cones) | #C2BA9C | 0.093 |
| Tritanopia (no blue cones) | #73CCC0 | 0.056 |
| Achromatopsia (no color) | #BDBDBD | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81CE99
#81CE99
oklch(78.7% 0.108 153.3)
- #E4A0D7
#E4A0D7
oklch(78.8% 0.107 333.5)
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 #81CE99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.031
- Seafoam Blue #78D1B6 ΔE 0.037
- Pale Teal #82CBB2 ΔE 0.038
- Dark Sea Green #8FBC8F ΔE 0.048
- Light Moss Green #A6C875 ΔE 0.051
- Tiffany Blue #94D2BD ΔE 0.055
- Soft Green #6FC276 ΔE 0.055
- Emerald #06D6A0 ΔE 0.061
Use #81CE99 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.