#57B277
Closest named color: Dark Seafoam Green (#3EAF76). oklch(69.2% 0.124 153.3), rgb(87, 178, 119).
Aa
Black text reads best on this color (8.03:1).
About this color
#57B277 is a medium-light, moderately saturated green. In OKLCH its lightness is 69%, its chroma 0.124 and its hue 153°. 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 8.03:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 8.03:1 |
| White text | 2.61:1 |
Values
| HEX | #57B277 |
| RGB | rgb(87, 178, 119) |
| HSL | hsl(141, 37%, 52%) |
| OKLCH | oklch(69.2% 0.124 153.3) |
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 #57B277 | 2.61:1 | Fails | Lc -55.9 | Large or bold text, headings |
| Black text on #57B277 | 8.03:1 | AAA | Lc 53.3 | Large or bold text, headings |
| #57B277 text on white | 2.61:1 | Fails | Lc 50.8 | Large or bold text, headings |
| #57B277 text on black | 8.03:1 | AAA | Lc -51.2 | 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
#F0F8F2
oklch(97.1% 0.012 153.7)
-
Step 100
100
#DFEFE3
oklch(93.7% 0.023 153.4)
-
Step 200
200
#C4E2CC
oklch(88.5% 0.044 153.6)
-
Step 300
300
#9AD0A9
oklch(80.9% 0.078 153.1)
-
Step 400
400 (this color)
#57B277
oklch(69.2% 0.124 153.3)
-
Step 500
500
#0EA459
oklch(63.1% 0.159 153.2)
-
Step 600
600
#008A49
oklch(55.5% 0.142 153.3)
-
Step 700
700
#00743D
oklch(49% 0.125 153.5)
-
Step 800
800
#005F31
oklch(42.6% 0.108 153.6)
-
Step 900
900
#005028
oklch(37.8% 0.097 153.4)
-
Step 950
950
#032F16
oklch(26.9% 0.066 153.2)
#57B277 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) | #B2A673 | 0.108 |
| Deuteranopia (no green cones) | #A59D7B | 0.106 |
| Tritanopia (no blue cones) | #41B0A3 | 0.064 |
| Achromatopsia (no color) | #A0A0A0 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57B277
#57B277
oklch(69.2% 0.124 153.3)
- #C97EBC
#C97EBC
oklch(69.2% 0.122 333.3)
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 #57B277, 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
- Medium Sea Green #3CB371 ΔE 0.022
- Algae #54AC68 ΔE 0.023
- Boring Green #63B365 ΔE 0.024
- Tea #65AB7C ΔE 0.026
- Bluey Green #2BB179 ΔE 0.027
- Dark Seafoam #1FB57A ΔE 0.029
- Seaweed Green #35AD6B ΔE 0.034
Use #57B277 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.