#57B291
Closest named color: Greeny Blue (#42B395). oklch(69.8% 0.101 167.3), rgb(87, 178, 145).
Aa
Black text reads best on this color (8.18:1).
About this color
#57B291 is a medium-light, moderately saturated green. In OKLCH its lightness is 70%, its chroma 0.101 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.014 away. Black text reads best on it, at 8.18:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.18:1 |
| White text | 2.56:1 |
Values
| HEX | #57B291 |
| RGB | rgb(87, 178, 145) |
| HSL | hsl(158, 37%, 52%) |
| OKLCH | oklch(69.8% 0.101 167.3) |
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 #57B291 | 2.56:1 | Fails | Lc -55.1 | Large or bold text, headings |
| Black text on #57B291 | 8.18:1 | AAA | Lc 54.0 | Large or bold text, headings |
| #57B291 text on white | 2.56:1 | Fails | Lc 50.0 | Large or bold text, headings |
| #57B291 text on black | 8.18:1 | AAA | Lc -51.9 | 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
#F0F7F4
oklch(97% 0.008 168.8)
-
Step 100
100
#DFEEE7
oklch(93.6% 0.018 166.4)
-
Step 200
200
#C4E1D4
oklch(88.5% 0.035 166.8)
-
Step 300
300
#99CEB8
oklch(80.8% 0.063 167.3)
-
Step 400
400 (this color)
#57B291
oklch(69.8% 0.101 167.3)
-
Step 500
500
#00A279
oklch(63.2% 0.13 167)
-
Step 600
600
#008865
oklch(55.6% 0.114 167)
-
Step 700
700
#007255
oklch(49% 0.1 167.6)
-
Step 800
800
#005E45
oklch(42.8% 0.088 167.1)
-
Step 900
900
#004E39
oklch(37.6% 0.077 167.4)
-
Step 950
950
#022F21
oklch(27.2% 0.054 166.8)
#57B291 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) | #AEA88F | 0.101 |
| Deuteranopia (no green cones) | #A09D93 | 0.098 |
| Tritanopia (no blue cones) | #34B3A9 | 0.037 |
| Achromatopsia (no color) | #A2A2A2 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57B291
#57B291
oklch(69.8% 0.101 167.3)
- #CC84AA
#CC84AA
oklch(69.9% 0.101 347.1)
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 #57B291, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.014
- Tea #65AB7C ΔE 0.029
- Light Sea Green #20B2AA ΔE 0.043
- Dusty Green #76A973 ΔE 0.044
- Dark Seafoam Green #3EAF76 ΔE 0.044
- Topaz #13BBAF ΔE 0.046
- Bluey Green #2BB179 ΔE 0.047
- Faded Green #7BB274 ΔE 0.047
Use #57B291 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.