#51A976
Closest named color: Dark Seafoam Green (#3EAF76). oklch(66.6% 0.115 156), rgb(81, 169, 118).
Aa
Black text reads best on this color (7.28:1).
About this color
#51A976 is a medium-light, moderately saturated green. In OKLCH its lightness is 67%, its chroma 0.115 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam Green (#3EAF76), ΔE 0.021 away. Black text reads best on it, at 7.28:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 7.28:1 |
| White text | 2.88:1 |
Values
| HEX | #51A976 |
| RGB | rgb(81, 169, 118) |
| HSL | hsl(145, 35%, 49%) |
| OKLCH | oklch(66.6% 0.115 156) |
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 #51A976 | 2.88:1 | Fails | Lc -60.2 | Content text, not long reading |
| Black text on #51A976 | 7.28:1 | AAA | Lc 49.2 | Large or bold text, headings |
| #51A976 text on white | 2.88:1 | Fails | Lc 54.9 | Large or bold text, headings |
| #51A976 text on black | 7.28:1 | AAA | Lc -47.0 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE5
oklch(93.6% 0.016 154.5)
-
Step 200
200
#CAE0D1
oklch(88.6% 0.031 155.9)
-
Step 300
300
#A4CCB2
oklch(80.9% 0.056 156.4)
-
Step 400
400
#70B289
oklch(70.8% 0.091 156)
-
Step 500
500 (this color)
#51A976
oklch(66.6% 0.115 156)
-
Step 600
600
#1D8853
oklch(55.5% 0.125 156)
-
Step 700
700
#097344
oklch(49% 0.115 156.4)
-
Step 800
800
#105E38
oklch(42.7% 0.096 156.2)
-
Step 900
900
#184D30
oklch(37.6% 0.075 155.9)
-
Step 950
950
#102D1C
oklch(26.9% 0.048 155.6)
#51A976 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) | #A89D73 | 0.104 |
| Deuteranopia (no green cones) | #9C9579 | 0.101 |
| Tritanopia (no blue cones) | #39A89B | 0.054 |
| Achromatopsia (no color) | #989898 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51A976
#51A976
oklch(66.6% 0.115 156)
- #C078AF
#C078AF
oklch(66.7% 0.115 335.9)
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 #51A976, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam Green #3EAF76 ΔE 0.021
- Tea #65AB7C ΔE 0.022
- Algae #54AC68 ΔE 0.023
- Bluey Green #2BB179 ΔE 0.029
- Seaweed Green #35AD6B ΔE 0.029
- Jade #1FA774 ΔE 0.031
- Medium Sea Green #3CB371 ΔE 0.034
- Dusty Green #76A973 ΔE 0.036
Use #51A976 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.