#51A860
Closest named color: Algae (#54AC68). oklch(65.9% 0.135 147.6), rgb(81, 168, 96).
Aa
Black text reads best on this color (7.11:1).
About this color
#51A860 is a medium-light, moderately saturated green. In OKLCH its lightness is 66%, its chroma 0.135 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae (#54AC68), ΔE 0.014 away. Black text reads best on it, at 7.11:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.135) |
| Temperature | in between |
| Nearest name | Algae (#54AC68) |
| Black text | 7.11:1 |
| White text | 2.94:1 |
Values
| HEX | #51A860 |
| RGB | rgb(81, 168, 96) |
| HSL | hsl(130, 35%, 49%) |
| OKLCH | oklch(65.9% 0.135 147.6) |
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 #51A860 | 2.94:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #51A860 | 7.11:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #51A860 text on white | 2.94:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #51A860 text on black | 7.11:1 | AAA | Lc -46.0 | 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 500.
-
Step 50
50
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EEE3
oklch(93.7% 0.019 147.8)
-
Step 200
200
#CAE0CC
oklch(88.5% 0.036 147.9)
-
Step 300
300
#A5CDA9
oklch(81% 0.066 147.6)
-
Step 400
400
#72B37A
oklch(70.8% 0.106 147.3)
-
Step 500
500 (this color)
#51A860
oklch(65.9% 0.135 147.6)
-
Step 600
600
#22893C
oklch(55.5% 0.146 147.6)
-
Step 700
700
#11742E
oklch(49% 0.136 147.6)
-
Step 800
800
#145F27
oklch(42.7% 0.113 147.5)
-
Step 900
900
#1A4E24
oklch(37.8% 0.089 147.3)
-
Step 950
950
#112E16
oklch(27.1% 0.056 147.5)
#51A860 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) | #AA9B5B | 0.109 |
| Deuteranopia (no green cones) | #9E9365 | 0.107 |
| Tritanopia (no blue cones) | #41A596 | 0.078 |
| Achromatopsia (no color) | #969696 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51A860
#51A860
oklch(65.9% 0.135 147.6)
- #BD72BC
#BD72BC
oklch(65.9% 0.135 327.4)
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 #51A860, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae #54AC68 ΔE 0.014
- Seaweed Green #35AD6B ΔE 0.021
- Fern #63A950 ΔE 0.023
- Dark Pastel Green #56AE57 ΔE 0.024
- Muted Green #5FA052 ΔE 0.024
- Off Green #6BA353 ΔE 0.026
- Jade Green #2BAF6A ΔE 0.026
- Mid Green #50A747 ΔE 0.028
Use #51A860 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.