#51C76D
Closest named color: Dark Mint (#48C072). oklch(74.1% 0.166 148.6), rgb(81, 199, 109).
Aa
Black text reads best on this color (9.74:1).
About this color
#51C76D is a medium-light, vivid green. In OKLCH its lightness is 74%, its chroma 0.166 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Mint (#48C072), ΔE 0.024 away. Black text reads best on it, at 9.74:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.166) |
| Temperature | in between |
| Nearest name | Dark Mint (#48C072) |
| Black text | 9.74:1 |
| White text | 2.15:1 |
Values
| HEX | #51C76D |
| RGB | rgb(81, 199, 109) |
| HSL | hsl(134, 51%, 55%) |
| OKLCH | oklch(74.1% 0.166 148.6) |
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 #51C76D | 2.15:1 | Fails | Lc -46.7 | Large or bold text, headings |
| Black text on #51C76D | 9.74:1 | AAA | Lc 61.9 | Content text, not long reading |
| #51C76D text on white | 2.15:1 | Fails | Lc 42.0 | Non-text elements, placeholder text |
| #51C76D text on black | 9.74:1 | AAA | Lc -60.2 | 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 400.
-
Step 50
50
#EFF8F0
oklch(97% 0.014 148.8)
-
Step 100
100
#DDF0DF
oklch(93.6% 0.03 148.4)
-
Step 200
200
#C0E4C4
oklch(88.4% 0.058 148.2)
-
Step 300
300
#91D49B
oklch(81% 0.105 148.4)
-
Step 400
400 (this color)
#51C76D
oklch(74.1% 0.166 148.6)
-
Step 500
500
#00A545
oklch(63% 0.179 148.7)
-
Step 600
600
#008B39
oklch(55.6% 0.158 148.7)
-
Step 700
700
#00752E
oklch(49.1% 0.14 148.5)
-
Step 800
800
#006025
oklch(42.7% 0.121 148.7)
-
Step 900
900
#00501D
oklch(37.6% 0.108 148.5)
-
Step 950
950
#00300F
oklch(27% 0.076 148.8)
#51C76D 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) | #C9B766 | 0.135 |
| Deuteranopia (no green cones) | #B9AC73 | 0.133 |
| Tritanopia (no blue cones) | #32C3B1 | 0.094 |
| Achromatopsia (no color) | #B1B1B1 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51C76D
#51C76D
oklch(74.1% 0.166 148.6)
- #E381DF
#E381DF
oklch(74.1% 0.167 328.6)
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 #51C76D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mint #48C072 ΔE 0.024
- Algae Green #21C36F ΔE 0.027
- Seaweed #18D17B ΔE 0.031
- Soft Green #6FC276 ΔE 0.032
- Dark Mint Green #20C073 ΔE 0.034
- Greenblue #23C48B ΔE 0.044
- Turtle Green #75B84F ΔE 0.046
- Cool Green #33B864 ΔE 0.049
Use #51C76D 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.