#51BF72
Closest named color: Dark Mint (#48C072). oklch(72.2% 0.15 150.7), rgb(81, 191, 114).
Aa
Black text reads best on this color (9.04:1).
About this color
#51BF72 is a medium-light, vivid green. In OKLCH its lightness is 72%, its chroma 0.150 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 0.006 away. Black text reads best on it, at 9.04:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Dark Mint (#48C072) |
| Black text | 9.04:1 |
| White text | 2.32:1 |
Values
| HEX | #51BF72 |
| RGB | rgb(81, 191, 114) |
| HSL | hsl(138, 46%, 53%) |
| OKLCH | oklch(72.2% 0.15 150.7) |
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 #51BF72 | 2.32:1 | Fails | Lc -50.4 | Large or bold text, headings |
| Black text on #51BF72 | 9.04:1 | AAA | Lc 58.5 | Large or bold text, headings |
| #51BF72 text on white | 2.32:1 | Fails | Lc 45.5 | Large or bold text, headings |
| #51BF72 text on black | 9.04:1 | AAA | Lc -56.6 | 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
#F0F8F1
oklch(97.1% 0.013 149.3)
-
Step 100
100
#DEEFE1
oklch(93.6% 0.026 150.8)
-
Step 200
200
#C1E4C8
oklch(88.6% 0.053 151.1)
-
Step 300
300
#94D2A1
oklch(80.9% 0.094 150.4)
-
Step 400
400 (this color)
#51BF72
oklch(72.2% 0.15 150.7)
-
Step 500
500
#00A54E
oklch(63.1% 0.171 150.6)
-
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)
#51BF72 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) | #C0B06D | 0.127 |
| Deuteranopia (no green cones) | #B1A677 | 0.124 |
| Tritanopia (no blue cones) | #33BCAC | 0.082 |
| Achromatopsia (no color) | #AAAAAA | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51BF72
#51BF72
oklch(72.2% 0.15 150.7)
- #DA7FD0
#DA7FD0
oklch(72.1% 0.151 331.1)
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 #51BF72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mint #48C072 ΔE 0.006
- Dark Mint Green #20C073 ΔE 0.023
- Algae Green #21C36F ΔE 0.026
- Soft Green #6FC276 ΔE 0.028
- Greenblue #23C48B ΔE 0.032
- Boring Green #63B365 ΔE 0.033
- Cool Green #33B864 ΔE 0.033
- Green Blue #01C08D ΔE 0.039
Use #51BF72 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.