#57AAAB
Closest named color: Cadet Blue (#5F9EA0). oklch(68.7% 0.081 196.5), rgb(87, 170, 171).
Aa
Black text reads best on this color (7.74:1).
About this color
#57AAAB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.081 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.033 away. Black text reads best on it, at 7.74:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.74:1 |
| White text | 2.71:1 |
Values
| HEX | #57AAAB |
| RGB | rgb(87, 170, 171) |
| HSL | hsl(181, 33%, 51%) |
| OKLCH | oklch(68.7% 0.081 196.5) |
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 #57AAAB | 2.71:1 | Fails | Lc -57.6 | Large or bold text, headings |
| Black text on #57AAAB | 7.74:1 | AAA | Lc 51.6 | Large or bold text, headings |
| #57AAAB text on white | 2.71:1 | Fails | Lc 52.4 | Large or bold text, headings |
| #57AAAB text on black | 7.74:1 | AAA | Lc -49.5 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#DFEDED
oklch(93.6% 0.015 196.9)
-
Step 200
200
#C5DFDF
oklch(88.5% 0.028 196.7)
-
Step 300
300
#9BCBCB
oklch(80.8% 0.05 196.2)
-
Step 400
400 (this color)
#57AAAB
oklch(68.7% 0.081 196.5)
-
Step 500
500
#189C9E
oklch(63% 0.103 196.5)
-
Step 600
600
#008486
oklch(55.6% 0.095 196.7)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#005B5C
oklch(42.7% 0.073 196.1)
-
Step 900
900
#004C4D
oklch(37.8% 0.064 196.3)
-
Step 950
950
#042D2D
oklch(27.1% 0.043 194.9)
#57AAAB 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) | #A1A3AB | 0.085 |
| Deuteranopia (no green cones) | #9299AC | 0.078 |
| Tritanopia (no blue cones) | #22AFAA | 0.032 |
| Achromatopsia (no color) | #9D9D9D | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57AAAB
#57AAAB
oklch(68.7% 0.081 196.5)
- #C78689
#C78689
oklch(68.6% 0.08 16.3)
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 #57AAAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.033
- Light Sea Green #20B2AA ΔE 0.036
- Dull Teal #5F9E8F ΔE 0.044
- Turquoise Blue #06B1C4 ΔE 0.044
- Greyblue #77A1B5 ΔE 0.046
- Greeny Blue #42B395 ΔE 0.051
- Topaz #13BBAF ΔE 0.053
- Bluegrey #85A3B2 ΔE 0.053
Use #57AAAB 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.