#51CA7E
Closest named color: Soft Green (#6FC276). oklch(75.2% 0.154 152.9), rgb(81, 202, 126).
Aa
Black text reads best on this color (10.09:1).
About this color
#51CA7E is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.154 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.028 away. Black text reads best on it, at 10.09:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.09:1 |
| White text | 2.07:1 |
Values
| HEX | #51CA7E |
| RGB | rgb(81, 202, 126) |
| HSL | hsl(142, 53%, 55%) |
| OKLCH | oklch(75.2% 0.154 152.9) |
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 #51CA7E | 2.07:1 | Fails | Lc -44.9 | Non-text elements, placeholder text |
| Black text on #51CA7E | 10.09:1 | AAA | Lc 63.6 | Content text, not long reading |
| #51CA7E text on white | 2.07:1 | Fails | Lc 40.3 | Non-text elements, placeholder text |
| #51CA7E text on black | 10.09:1 | AAA | Lc -62.0 | 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
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DDF0E1
oklch(93.7% 0.028 151.9)
-
Step 200
200
#BFE4C9
oklch(88.5% 0.053 153.5)
-
Step 300
300
#8FD3A3
oklch(80.8% 0.097 153.1)
-
Step 400
400 (this color)
#51CA7E
oklch(75.2% 0.154 152.9)
-
Step 500
500
#00A457
oklch(63% 0.162 153)
-
Step 600
600
#008A48
oklch(55.5% 0.143 153)
-
Step 700
700
#00743C
oklch(49% 0.126 153.1)
-
Step 800
800
#005F30
oklch(42.6% 0.109 153.1)
-
Step 900
900
#005027
oklch(37.8% 0.098 152.9)
-
Step 950
950
#003015
oklch(27.1% 0.07 152.9)
#51CA7E 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) | #CABB79 | 0.134 |
| Deuteranopia (no green cones) | #BAAF83 | 0.132 |
| Tritanopia (no blue cones) | #27C7B7 | 0.081 |
| Achromatopsia (no color) | #B4B4B4 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51CA7E
#51CA7E
oklch(75.2% 0.154 152.9)
- #E787D8
#E787D8
oklch(75.2% 0.154 332.9)
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 #51CA7E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.028
- Seaweed #18D17B ΔE 0.030
- Dark Mint #48C072 ΔE 0.031
- Greenblue #23C48B ΔE 0.035
- Algae Green #21C36F ΔE 0.038
- Dark Mint Green #20C073 ΔE 0.042
- Emerald #06D6A0 ΔE 0.046
- Green Blue #01C08D ΔE 0.049
Use #51CA7E 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.