#51C080
Closest named color: Dark Mint (#48C072). oklch(72.7% 0.139 155.3), rgb(81, 192, 128).
Aa
Black text reads best on this color (9.20:1).
About this color
#51C080 is a medium-light, moderately saturated green. In OKLCH its lightness is 73%, its chroma 0.139 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Mint (#48C072), ΔE 0.020 away. Black text reads best on it, at 9.20:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Dark Mint (#48C072) |
| Black text | 9.20:1 |
| White text | 2.28:1 |
Values
| HEX | #51C080 |
| RGB | rgb(81, 192, 128) |
| HSL | hsl(145, 47%, 54%) |
| OKLCH | oklch(72.7% 0.139 155.3) |
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 #51C080 | 2.28:1 | Fails | Lc -49.6 | Large or bold text, headings |
| Black text on #51C080 | 9.20:1 | AAA | Lc 59.3 | Large or bold text, headings |
| #51C080 text on white | 2.28:1 | Fails | Lc 44.7 | Non-text elements, placeholder text |
| #51C080 text on black | 9.20:1 | AAA | Lc -57.4 | Large or bold text, headings |
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
#F0F8F2
oklch(97.1% 0.012 153.7)
-
Step 100
100
#DDEFE3
oklch(93.5% 0.025 156.7)
-
Step 200
200
#C1E3CC
oklch(88.5% 0.048 155.7)
-
Step 300
300
#93D2A9
oklch(81% 0.087 155.4)
-
Step 400
400 (this color)
#51C080
oklch(72.7% 0.139 155.3)
-
Step 500
500
#00A45E
oklch(63.1% 0.156 155.1)
-
Step 600
600
#008A4F
oklch(55.7% 0.136 155.4)
-
Step 700
700
#007441
oklch(49.1% 0.121 155.2)
-
Step 800
800
#005F34
oklch(42.6% 0.105 155.1)
-
Step 900
900
#004F2B
oklch(37.6% 0.092 155.5)
-
Step 950
950
#003017
oklch(27.1% 0.068 154.6)
#51C080 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) | #BFB27C | 0.124 |
| Deuteranopia (no green cones) | #B0A784 | 0.122 |
| Tritanopia (no blue cones) | #2BBEAF | 0.068 |
| Achromatopsia (no color) | #ACACAC | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51C080
#51C080
oklch(72.7% 0.139 155.3)
- #DC83C9
#DC83C9
oklch(72.7% 0.14 335.2)
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 #51C080, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mint #48C072 ΔE 0.020
- Greenblue #23C48B ΔE 0.022
- Soft Green #6FC276 ΔE 0.027
- Green Blue #01C08D ΔE 0.030
- Dark Mint Green #20C073 ΔE 0.032
- Algae Green #21C36F ΔE 0.037
- Boring Green #63B365 ΔE 0.040
- Medium Sea Green #3CB371 ΔE 0.043
Use #51C080 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.