#51DA8C
Closest named color: Aqua Green (#12E193). oklch(79.4% 0.163 154.8), rgb(81, 218, 140).
Aa
Black text reads best on this color (11.75:1).
About this color
#51DA8C is a light, vivid green. In OKLCH its lightness is 79%, its chroma 0.163 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Green (#12E193), ΔE 0.024 away. Black text reads best on it, at 11.75:1.
| Hue family | Greens |
| Lightness | light (79%) |
| Chroma | vivid (0.163) |
| Temperature | in between |
| Nearest name | Aqua Green (#12E193) |
| Black text | 11.75:1 |
| White text | 1.78:1 |
Values
| HEX | #51DA8C |
| RGB | rgb(81, 218, 140) |
| HSL | hsl(146, 65%, 59%) |
| OKLCH | oklch(79.4% 0.163 154.8) |
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 #51DA8C | 1.78:1 | Fails | Lc -36.6 | Non-text elements, placeholder text |
| Black text on #51DA8C | 11.75:1 | AAA | Lc 71.2 | Content text, not long reading |
| #51DA8C text on white | 1.78:1 | Fails | Lc 32.6 | Non-text elements, placeholder text |
| #51DA8C text on black | 11.75:1 | AAA | Lc -70.0 | 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
#EBFAEF
oklch(97.1% 0.021 154.1)
-
Step 100
100
#D2F4DC
oklch(93.6% 0.048 154.6)
-
Step 200
200
#A9EBBF
oklch(88.4% 0.09 155)
-
Step 300
300 (this color)
#51DA8C
oklch(79.4% 0.163 154.8)
-
Step 400
400
#00BF6D
oklch(70.7% 0.176 154.8)
-
Step 500
500
#00A45D
oklch(63.1% 0.157 154.8)
-
Step 600
600
#008A4D
oklch(55.6% 0.138 154.7)
-
Step 700
700
#007440
oklch(49.1% 0.122 154.8)
-
Step 800
800
#005F34
oklch(42.6% 0.105 155.1)
-
Step 900
900
#004F2A
oklch(37.6% 0.093 154.9)
-
Step 950
950
#003017
oklch(27.1% 0.068 154.6)
#51DA8C 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) | #D9C987 | 0.145 |
| Deuteranopia (no green cones) | #C7BD91 | 0.141 |
| Tritanopia (no blue cones) | #09D8C6 | 0.080 |
| Achromatopsia (no color) | #C2C2C2 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51DA8C
#51DA8C
oklch(79.4% 0.163 154.8)
- #FB91E6
#FB91E6
oklch(79.5% 0.163 334.7)
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 #51DA8C, closest first.
No curated palette has a color within ΔE 0.04 of #51DA8C.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Green #12E193 ΔE 0.024
- Emerald #06D6A0 ΔE 0.037
- Weird Green #3AE57F ΔE 0.040
- Seaweed #18D17B ΔE 0.042
- Aqua Marine #2EE8BB ΔE 0.060
- Fresh Green #69D84F ΔE 0.062
- Soft Green #6FC276 ΔE 0.064
- Medium Aquamarine #66CDAA ΔE 0.065
Use #51DA8C 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.