#51BF74
Closest named color: Dark Mint (#48C072). oklch(72.2% 0.149 151.3), rgb(81, 191, 116).
Aa
Black text reads best on this color (9.05:1).
About this color
#51BF74 is a medium-light, vivid green. In OKLCH its lightness is 72%, its chroma 0.149 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 0.007 away. Black text reads best on it, at 9.05:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Dark Mint (#48C072) |
| Black text | 9.05:1 |
| White text | 2.31:1 |
Values
| HEX | #51BF74 |
| RGB | rgb(81, 191, 116) |
| HSL | hsl(139, 46%, 53%) |
| OKLCH | oklch(72.2% 0.149 151.3) |
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 #51BF74 | 2.31:1 | Fails | Lc -50.3 | Large or bold text, headings |
| Black text on #51BF74 | 9.05:1 | AAA | Lc 58.5 | Large or bold text, headings |
| #51BF74 text on white | 2.31:1 | Fails | Lc 45.4 | Large or bold text, headings |
| #51BF74 text on black | 9.05:1 | 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
#C1E3C8
oklch(88.4% 0.051 151.3)
-
Step 300
300
#94D2A2
oklch(80.9% 0.093 150.9)
-
Step 400
400 (this color)
#51BF74
oklch(72.2% 0.149 151.3)
-
Step 500
500
#00A551
oklch(63.2% 0.169 151.3)
-
Step 600
600
#008B43
oklch(55.7% 0.149 151.3)
-
Step 700
700
#007537
oklch(49.2% 0.132 151.1)
-
Step 800
800
#00602C
oklch(42.8% 0.115 151.2)
-
Step 900
900
#005024
oklch(37.7% 0.101 151.4)
-
Step 950
950
#003013
oklch(27.1% 0.072 151.4)
#51BF74 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) | #C0B06F | 0.127 |
| Deuteranopia (no green cones) | #B1A679 | 0.124 |
| Tritanopia (no blue cones) | #32BCAC | 0.080 |
| Achromatopsia (no color) | #AAAAAA | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51BF74
#51BF74
oklch(72.2% 0.149 151.3)
- #DA80CF
#DA80CF
oklch(72.2% 0.149 331.6)
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 #51BF74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mint #48C072 ΔE 0.007
- Dark Mint Green #20C073 ΔE 0.024
- Algae Green #21C36F ΔE 0.027
- Soft Green #6FC276 ΔE 0.028
- Greenblue #23C48B ΔE 0.031
- Boring Green #63B365 ΔE 0.033
- Cool Green #33B864 ΔE 0.034
- Green Blue #01C08D ΔE 0.038
Use #51BF74 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.