#51DC7E
Closest named color: Weird Green (#3AE57F). oklch(79.7% 0.179 150.8), rgb(81, 220, 126).
Aa
Black text reads best on this color (11.88:1).
About this color
#51DC7E is a light, vivid green. In OKLCH its lightness is 80%, its chroma 0.179 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Weird Green (#3AE57F), ΔE 0.026 away. Black text reads best on it, at 11.88:1.
| Hue family | Greens |
| Lightness | light (80%) |
| Chroma | vivid (0.179) |
| Temperature | in between |
| Nearest name | Weird Green (#3AE57F) |
| Black text | 11.88:1 |
| White text | 1.76:1 |
Values
| HEX | #51DC7E |
| RGB | rgb(81, 220, 126) |
| HSL | hsl(139, 67%, 59%) |
| OKLCH | oklch(79.7% 0.179 150.8) |
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 #51DC7E | 1.76:1 | Fails | Lc -36.0 | Non-text elements, placeholder text |
| Black text on #51DC7E | 11.88:1 | AAA | Lc 71.8 | Content text, not long reading |
| #51DC7E text on white | 1.76:1 | Fails | Lc 32.0 | Non-text elements, placeholder text |
| #51DC7E text on black | 11.88:1 | AAA | Lc -70.7 | 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
#EBFAED
oklch(97% 0.023 149.4)
-
Step 100
100
#D2F4D8
oklch(93.5% 0.052 150.4)
-
Step 200
200
#A9ECB8
oklch(88.5% 0.098 150.9)
-
Step 300
300 (this color)
#51DC7E
oklch(79.7% 0.179 150.8)
-
Step 400
400
#00C05D
oklch(70.7% 0.191 150.8)
-
Step 500
500
#00A54F
oklch(63.2% 0.171 150.8)
-
Step 600
600
#008B41
oklch(55.7% 0.151 150.7)
-
Step 700
700
#007536
oklch(49.2% 0.133 150.8)
-
Step 800
800
#00602B
oklch(42.8% 0.116 150.8)
-
Step 900
900
#005023
oklch(37.7% 0.102 150.9)
-
Step 950
950
#003012
oklch(27% 0.073 150.7)
#51DC7E 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) | #DDCA77 | 0.150 |
| Deuteranopia (no green cones) | #CBBE84 | 0.147 |
| Tritanopia (no blue cones) | #1BD9C5 | 0.096 |
| Achromatopsia (no color) | #C3C3C3 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51DC7E
#51DC7E
oklch(79.7% 0.179 150.8)
- #FC8EF1
#FC8EF1
oklch(79.7% 0.178 330.8)
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 #51DC7E, closest first.
No curated palette has a color within ΔE 0.04 of #51DC7E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Weird Green #3AE57F ΔE 0.026
- Aqua Green #12E193 ΔE 0.027
- Seaweed #18D17B ΔE 0.042
- Fresh Green #69D84F ΔE 0.044
- Emerald #06D6A0 ΔE 0.054
- Turquoise Green #04F489 ΔE 0.064
- Apple #6ECB3C ΔE 0.064
- Apple Green #76CD26 ΔE 0.071
Use #51DC7E 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.