#57B299
Closest named color: Greeny Blue (#42B395). oklch(70% 0.096 173.1), rgb(87, 178, 153).
Aa
Black text reads best on this color (8.23:1).
About this color
#57B299 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.096 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.017 away. Black text reads best on it, at 8.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.23:1 |
| White text | 2.55:1 |
Values
| HEX | #57B299 |
| RGB | rgb(87, 178, 153) |
| HSL | hsl(164, 37%, 52%) |
| OKLCH | oklch(70% 0.096 173.1) |
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 #57B299 | 2.55:1 | Fails | Lc -54.9 | Large or bold text, headings |
| Black text on #57B299 | 8.23:1 | AAA | Lc 54.3 | Large or bold text, headings |
| #57B299 text on white | 2.55:1 | Fails | Lc 49.8 | Large or bold text, headings |
| #57B299 text on black | 8.23:1 | AAA | Lc -52.2 | 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
#F0F7F5
oklch(97% 0.008 177.3)
-
Step 100
100
#DFEEE9
oklch(93.7% 0.017 174)
-
Step 200
200
#C4E1D7
oklch(88.6% 0.034 172.7)
-
Step 300
300
#99CEBD
oklch(81% 0.06 173)
-
Step 400
400 (this color)
#57B299
oklch(70% 0.096 173.1)
-
Step 500
500
#00A183
oklch(63.2% 0.121 173.2)
-
Step 600
600
#00876D
oklch(55.6% 0.107 172.9)
-
Step 700
700
#00725C
oklch(49.2% 0.094 173.1)
-
Step 800
800
#005D4B
oklch(42.7% 0.081 173.5)
-
Step 900
900
#004E3E
oklch(37.8% 0.073 172.9)
-
Step 950
950
#022E24
oklch(26.9% 0.05 173.2)
#57B299 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) | #ADA898 | 0.099 |
| Deuteranopia (no green cones) | #9F9E9B | 0.095 |
| Tritanopia (no blue cones) | #2FB4AB | 0.031 |
| Achromatopsia (no color) | #A2A2A2 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57B299
#57B299
oklch(70% 0.096 173.1)
- #CD85A3
#CD85A3
oklch(69.9% 0.096 353.3)
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 #57B299, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.017
- Light Sea Green #20B2AA ΔE 0.035
- Tea #65AB7C ΔE 0.038
- Topaz #13BBAF ΔE 0.040
- Dusty Green #76A973 ΔE 0.052
- Dark Seafoam Green #3EAF76 ΔE 0.055
- Dull Teal #5F9E8F ΔE 0.055
- Faded Green #7BB274 ΔE 0.056
Use #57B299 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.