#51CA89
Closest named color: Soft Green (#6FC276). oklch(75.4% 0.144 156.7), rgb(81, 202, 137).
Aa
Black text reads best on this color (10.15:1).
About this color
#51CA89 is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.144 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.030 away. Black text reads best on it, at 10.15:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.15:1 |
| White text | 2.06:1 |
Values
| HEX | #51CA89 |
| RGB | rgb(81, 202, 137) |
| HSL | hsl(148, 53%, 55%) |
| OKLCH | oklch(75.4% 0.144 156.7) |
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 #51CA89 | 2.06:1 | Fails | Lc -44.6 | Non-text elements, placeholder text |
| Black text on #51CA89 | 10.15:1 | AAA | Lc 63.9 | Content text, not long reading |
| #51CA89 text on white | 2.06:1 | Fails | Lc 40.0 | Non-text elements, placeholder text |
| #51CA89 text on black | 10.15:1 | AAA | Lc -62.3 | 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
#DDEFE3
oklch(93.5% 0.025 156.7)
-
Step 200
200
#BFE4CC
oklch(88.6% 0.051 156.8)
-
Step 300
300
#8FD3A9
oklch(81% 0.091 156.6)
-
Step 400
400 (this color)
#51CA89
oklch(75.4% 0.144 156.7)
-
Step 500
500
#00A462
oklch(63.2% 0.152 156.5)
-
Step 600
600
#008A52
oklch(55.7% 0.134 156.6)
-
Step 700
700
#007444
oklch(49.2% 0.118 156.6)
-
Step 800
800
#005F37
oklch(42.7% 0.102 156.7)
-
Step 900
900
#004F2D
oklch(37.6% 0.09 156.8)
-
Step 950
950
#002F19
oklch(26.9% 0.064 157.1)
#51CA89 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) | #C9BB85 | 0.132 |
| Deuteranopia (no green cones) | #B8B08D | 0.127 |
| Tritanopia (no blue cones) | #1EC8B9 | 0.069 |
| Achromatopsia (no color) | #B4B4B4 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51CA89
#51CA89
oklch(75.4% 0.144 156.7)
- #E88AD1
#E88AD1
oklch(75.5% 0.144 336.6)
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 #51CA89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.030
- Greenblue #23C48B ΔE 0.030
- Dark Mint #48C072 ΔE 0.037
- Emerald #06D6A0 ΔE 0.038
- Seaweed #18D17B ΔE 0.039
- Green Blue #01C08D ΔE 0.044
- Algae Green #21C36F ΔE 0.046
- Dark Mint Green #20C073 ΔE 0.047
Use #51CA89 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.