#51C876
Closest named color: Dark Mint (#48C072). oklch(74.5% 0.159 150.8), rgb(81, 200, 118).
Aa
Black text reads best on this color (9.87:1).
About this color
#51C876 is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.159 and its hue 151°. 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 9.87:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Dark Mint (#48C072) |
| Black text | 9.87:1 |
| White text | 2.12:1 |
Values
| HEX | #51C876 |
| RGB | rgb(81, 200, 118) |
| HSL | hsl(139, 52%, 55%) |
| OKLCH | oklch(74.5% 0.159 150.8) |
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 #51C876 | 2.12:1 | Fails | Lc -46.0 | Large or bold text, headings |
| Black text on #51C876 | 9.87:1 | AAA | Lc 62.6 | Content text, not long reading |
| #51C876 text on white | 2.12:1 | Fails | Lc 41.4 | Non-text elements, placeholder text |
| #51C876 text on black | 9.87:1 | AAA | Lc -60.9 | 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
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DDF0E0
oklch(93.7% 0.029 150.1)
-
Step 200
200
#C0E4C7
oklch(88.5% 0.055 150.9)
-
Step 300
300
#90D3A0
oklch(80.8% 0.099 151.2)
-
Step 400
400 (this color)
#51C876
oklch(74.5% 0.159 150.8)
-
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)
#51C876 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) | #C9B870 | 0.134 |
| Deuteranopia (no green cones) | #B9AD7B | 0.132 |
| Tritanopia (no blue cones) | #2DC5B4 | 0.086 |
| Achromatopsia (no color) | #B2B2B2 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51C876
#51C876
oklch(74.5% 0.159 150.8)
- #E484DA
#E484DA
oklch(74.5% 0.158 330.9)
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 #51C876, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mint #48C072 ΔE 0.024
- Soft Green #6FC276 ΔE 0.027
- Seaweed #18D17B ΔE 0.030
- Algae Green #21C36F ΔE 0.031
- Dark Mint Green #20C073 ΔE 0.036
- Greenblue #23C48B ΔE 0.037
- Green Blue #01C08D ΔE 0.050
- Turtle Green #75B84F ΔE 0.052
Use #51C876 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.