#51BC74
Closest named color: Dark Mint (#48C072). oklch(71.4% 0.144 151.7), rgb(81, 188, 116).
Aa
Black text reads best on this color (8.79:1).
About this color
#51BC74 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.144 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Mint (#48C072), ΔE 0.013 away. Black text reads best on it, at 8.79:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Dark Mint (#48C072) |
| Black text | 8.79:1 |
| White text | 2.38:1 |
Values
| HEX | #51BC74 |
| RGB | rgb(81, 188, 116) |
| HSL | hsl(140, 44%, 53%) |
| OKLCH | oklch(71.4% 0.144 151.7) |
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 #51BC74 | 2.38:1 | Fails | Lc -51.7 | Large or bold text, headings |
| Black text on #51BC74 | 8.79:1 | AAA | Lc 57.2 | Large or bold text, headings |
| #51BC74 text on white | 2.38:1 | Fails | Lc 46.8 | Large or bold text, headings |
| #51BC74 text on black | 8.79:1 | AAA | Lc -55.3 | 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
#C2E3C9
oklch(88.5% 0.05 151.5)
-
Step 300
300
#95D2A4
oklch(81% 0.09 151.7)
-
Step 400
400 (this color)
#51BC74
oklch(71.4% 0.144 151.7)
-
Step 500
500
#00A552
oklch(63.2% 0.168 151.6)
-
Step 600
600
#008A44
oklch(55.5% 0.147 151.7)
-
Step 700
700
#007538
oklch(49.2% 0.131 151.5)
-
Step 800
800
#00602D
oklch(42.8% 0.114 151.6)
-
Step 900
900
#005025
oklch(37.8% 0.1 151.8)
-
Step 950
950
#003013
oklch(27.1% 0.072 151.4)
#51BC74 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) | #BDAE6F | 0.124 |
| Deuteranopia (no green cones) | #AEA479 | 0.121 |
| Tritanopia (no blue cones) | #33B9AA | 0.077 |
| Achromatopsia (no color) | #A8A8A8 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51BC74
#51BC74
oklch(71.4% 0.144 151.7)
- #D67FCB
#D67FCB
oklch(71.4% 0.144 331.7)
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 #51BC74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mint #48C072 ΔE 0.013
- Dark Mint Green #20C073 ΔE 0.025
- Boring Green #63B365 ΔE 0.027
- Cool Green #33B864 ΔE 0.031
- Medium Sea Green #3CB371 ΔE 0.031
- Algae Green #21C36F ΔE 0.031
- Greenblue #23C48B ΔE 0.032
- Soft Green #6FC276 ΔE 0.033
Use #51BC74 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.