#51AE79
Closest named color: Dark Seafoam Green (#3EAF76). oklch(68% 0.119 156.2), rgb(81, 174, 121).
Aa
Black text reads best on this color (7.68:1).
About this color
#51AE79 is a medium-light, moderately saturated green. In OKLCH its lightness is 68%, its chroma 0.119 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 0.015 away. Black text reads best on it, at 7.68:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 7.68:1 |
| White text | 2.73:1 |
Values
| HEX | #51AE79 |
| RGB | rgb(81, 174, 121) |
| HSL | hsl(146, 36%, 50%) |
| OKLCH | oklch(68% 0.119 156.2) |
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 #51AE79 | 2.73:1 | Fails | Lc -57.9 | Large or bold text, headings |
| Black text on #51AE79 | 7.68:1 | AAA | Lc 51.4 | Large or bold text, headings |
| #51AE79 text on white | 2.73:1 | Fails | Lc 52.7 | Large or bold text, headings |
| #51AE79 text on black | 7.68:1 | AAA | Lc -49.2 | 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 400.
-
Step 50
50
#F0F8F3
oklch(97.2% 0.011 158.8)
-
Step 100
100
#DFEEE4
oklch(93.5% 0.021 156.8)
-
Step 200
200
#C4E2CE
oklch(88.5% 0.042 156.3)
-
Step 300
300
#99D0AD
oklch(81% 0.075 156.4)
-
Step 400
400 (this color)
#51AE79
oklch(68% 0.119 156.2)
-
Step 500
500
#00A461
oklch(63.2% 0.153 156.1)
-
Step 600
600
#008A51
oklch(55.7% 0.135 156.2)
-
Step 700
700
#007443
oklch(49.1% 0.119 156.1)
-
Step 800
800
#005F36
oklch(42.7% 0.103 156.1)
-
Step 900
900
#004F2C
oklch(37.6% 0.091 156.1)
-
Step 950
950
#022F19
oklch(26.9% 0.063 156.4)
#51AE79 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) | #ADA276 | 0.108 |
| Deuteranopia (no green cones) | #A0997C | 0.105 |
| Tritanopia (no blue cones) | #36ADA0 | 0.057 |
| Achromatopsia (no color) | #9C9C9C | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51AE79
#51AE79
oklch(68% 0.119 156.2)
- #C67BB4
#C67BB4
oklch(68% 0.118 336.1)
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 #51AE79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam Green #3EAF76 ΔE 0.015
- Tea #65AB7C ΔE 0.020
- Algae #54AC68 ΔE 0.021
- Bluey Green #2BB179 ΔE 0.023
- Medium Sea Green #3CB371 ΔE 0.025
- Seaweed Green #35AD6B ΔE 0.029
- Dark Seafoam #1FB57A ΔE 0.030
- Jade Green #2BAF6A ΔE 0.034
Use #51AE79 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.