#57D37F
Closest named color: Seaweed (#18D17B). oklch(77.6% 0.163 151.3), rgb(87, 211, 127).
Aa
Black text reads best on this color (11.02:1).
About this color
#57D37F is a medium-light, vivid green. In OKLCH its lightness is 78%, its chroma 0.163 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.029 away. Black text reads best on it, at 11.02:1.
| Hue family | Greens |
| Lightness | medium-light (78%) |
| Chroma | vivid (0.163) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 11.02:1 |
| White text | 1.90:1 |
Values
| HEX | #57D37F |
| RGB | rgb(87, 211, 127) |
| HSL | hsl(139, 58%, 58%) |
| OKLCH | oklch(77.6% 0.163 151.3) |
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 #57D37F | 1.90:1 | Fails | Lc -40.2 | Non-text elements, placeholder text |
| Black text on #57D37F | 11.02:1 | AAA | Lc 67.9 | Content text, not long reading |
| #57D37F text on white | 1.90:1 | Fails | Lc 36.0 | Non-text elements, placeholder text |
| #57D37F text on black | 11.02:1 | AAA | Lc -66.5 | 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 300.
-
Step 50
50
#EBFAEE
oklch(97.1% 0.022 151.7)
-
Step 100
100
#D4F3DA
oklch(93.5% 0.047 151)
-
Step 200
200
#ADEBBB
oklch(88.5% 0.091 151.2)
-
Step 300
300 (this color)
#57D37F
oklch(77.6% 0.163 151.3)
-
Step 400
400
#00C05F
oklch(70.7% 0.189 151.2)
-
Step 500
500
#00A551
oklch(63.2% 0.169 151.3)
-
Step 600
600
#008B43
oklch(55.7% 0.149 151.3)
-
Step 700
700
#007537
oklch(49.2% 0.132 151.1)
-
Step 800
800
#00602C
oklch(42.8% 0.115 151.2)
-
Step 900
900
#005024
oklch(37.7% 0.101 151.4)
-
Step 950
950
#003013
oklch(27.1% 0.072 151.4)
#57D37F 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) | #D4C379 | 0.138 |
| Deuteranopia (no green cones) | #C3B784 | 0.136 |
| Tritanopia (no blue cones) | #32D0BE | 0.087 |
| Achromatopsia (no color) | #BCBCBC | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57D37F
#57D37F
oklch(77.6% 0.163 151.3)
- #F18CE5
#F18CE5
oklch(77.6% 0.164 331.5)
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 #57D37F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.029
- Aqua Green #12E193 ΔE 0.040
- Emerald #06D6A0 ΔE 0.043
- Soft Green #6FC276 ΔE 0.046
- Weird Green #3AE57F ΔE 0.051
- Fresh Green #69D84F ΔE 0.055
- Dark Mint #48C072 ΔE 0.056
- Algae Green #21C36F ΔE 0.058
Use #57D37F 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.