#51C87F
Closest named color: Soft Green (#6FC276). oklch(74.7% 0.151 153.5), rgb(81, 200, 127).
Aa
Black text reads best on this color (9.91:1).
About this color
#51C87F is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.151 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.025 away. Black text reads best on it, at 9.91:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 9.91:1 |
| White text | 2.11:1 |
Values
| HEX | #51C87F |
| RGB | rgb(81, 200, 127) |
| HSL | hsl(143, 52%, 55%) |
| OKLCH | oklch(74.7% 0.151 153.5) |
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 #51C87F | 2.11:1 | Fails | Lc -45.8 | Large or bold text, headings |
| Black text on #51C87F | 9.91:1 | AAA | Lc 62.8 | Content text, not long reading |
| #51C87F text on white | 2.11:1 | Fails | Lc 41.2 | Non-text elements, placeholder text |
| #51C87F text on black | 9.91:1 | AAA | Lc -61.1 | 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
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DDF0E2
oklch(93.7% 0.027 153.9)
-
Step 200
200
#C0E4C9
oklch(88.6% 0.053 152.8)
-
Step 300
300
#90D3A4
oklch(80.9% 0.095 153.3)
-
Step 400
400 (this color)
#51C87F
oklch(74.7% 0.151 153.5)
-
Step 500
500
#00A459
oklch(63% 0.16 153.6)
-
Step 600
600
#008A4A
oklch(55.6% 0.141 153.6)
-
Step 700
700
#00743D
oklch(49% 0.125 153.5)
-
Step 800
800
#005F31
oklch(42.6% 0.108 153.6)
-
Step 900
900
#005028
oklch(37.8% 0.097 153.4)
-
Step 950
950
#003016
oklch(27.1% 0.069 153.7)
#51C87F 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) | #C8B97A | 0.132 |
| Deuteranopia (no green cones) | #B8AE84 | 0.129 |
| Tritanopia (no blue cones) | #28C6B5 | 0.076 |
| Achromatopsia (no color) | #B2B2B2 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51C87F
#51C87F
oklch(74.7% 0.151 153.5)
- #E586D5
#E586D5
oklch(74.7% 0.152 333.4)
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 #51C87F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.025
- Dark Mint #48C072 ΔE 0.027
- Greenblue #23C48B ΔE 0.030
- Seaweed #18D17B ΔE 0.034
- Algae Green #21C36F ΔE 0.036
- Dark Mint Green #20C073 ΔE 0.038
- Green Blue #01C08D ΔE 0.044
- Emerald #06D6A0 ΔE 0.048
Use #51C87F 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.