#57AE99
Closest named color: Greeny Blue (#42B395). oklch(69.1% 0.09 175.7), rgb(87, 174, 153).
Aa
Black text reads best on this color (7.91:1).
About this color
#57AE99 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.090 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.022 away. Black text reads best on it, at 7.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 7.91:1 |
| White text | 2.65:1 |
Values
| HEX | #57AE99 |
| RGB | rgb(87, 174, 153) |
| HSL | hsl(166, 35%, 51%) |
| OKLCH | oklch(69.1% 0.09 175.7) |
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 #57AE99 | 2.65:1 | Fails | Lc -56.6 | Large or bold text, headings |
| Black text on #57AE99 | 7.91:1 | AAA | Lc 52.6 | Large or bold text, headings |
| #57AE99 text on white | 2.65:1 | Fails | Lc 51.4 | Large or bold text, headings |
| #57AE99 text on black | 7.91:1 | AAA | Lc -50.5 | 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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#DFEEE9
oklch(93.7% 0.017 174)
-
Step 200
200
#C5E0D8
oklch(88.5% 0.031 175.8)
-
Step 300
300
#9ACDBF
oklch(80.9% 0.057 176.1)
-
Step 400
400 (this color)
#57AE99
oklch(69.1% 0.09 175.7)
-
Step 500
500
#10A086
oklch(63.1% 0.116 175.3)
-
Step 600
600
#008771
oklch(55.7% 0.104 175.8)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#005D4D
oklch(42.7% 0.08 175.6)
-
Step 900
900
#004D40
oklch(37.6% 0.07 176.4)
-
Step 950
950
#032E25
oklch(27% 0.048 174.9)
#57AE99 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) | #A9A598 | 0.095 |
| Deuteranopia (no green cones) | #9B9B9B | 0.090 |
| Tritanopia (no blue cones) | #31B0A8 | 0.028 |
| Achromatopsia (no color) | #9F9F9F | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57AE99
#57AE99
oklch(69.1% 0.09 175.7)
- #C9849E
#C9849E
oklch(69.1% 0.091 355.5)
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 #57AE99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.022
- Light Sea Green #20B2AA ΔE 0.033
- Tea #65AB7C ΔE 0.039
- Dull Teal #5F9E8F ΔE 0.044
- Topaz #13BBAF ΔE 0.045
- Cadet Blue #5F9EA0 ΔE 0.051
- Dusty Green #76A973 ΔE 0.052
- Grey Teal #5E9B8A ΔE 0.052
Use #57AE99 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.