#57B9CD
Closest named color: Turquoise Blue (#06B1C4). oklch(73.5% 0.096 213), rgb(87, 185, 205).
Aa
Black text reads best on this color (9.22:1).
About this color
#57B9CD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.096 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.046 away. Black text reads best on it, at 9.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 9.22:1 |
| White text | 2.27:1 |
Values
| HEX | #57B9CD |
| RGB | rgb(87, 185, 205) |
| HSL | hsl(190, 54%, 57%) |
| OKLCH | oklch(73.5% 0.096 213) |
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 #57B9CD | 2.27:1 | Fails | Lc -49.5 | Large or bold text, headings |
| Black text on #57B9CD | 9.22:1 | AAA | Lc 59.3 | Large or bold text, headings |
| #57B9CD text on white | 2.27:1 | Fails | Lc 44.7 | Non-text elements, placeholder text |
| #57B9CD text on black | 9.22:1 | AAA | Lc -57.5 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DEEDF1
oklch(93.6% 0.017 215.5)
-
Step 200
200
#C1DFE6
oklch(88.4% 0.033 213.4)
-
Step 300
300
#94CBD8
oklch(80.8% 0.06 213.9)
-
Step 400
400 (this color)
#57B9CD
oklch(73.5% 0.096 213)
-
Step 500
500
#009AB1
oklch(63% 0.11 213.1)
-
Step 600
600
#008295
oklch(55.7% 0.097 212.5)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900
#004A56
oklch(37.6% 0.066 213)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#57B9CD 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) | #AAB3CE | 0.088 |
| Deuteranopia (no green cones) | #98A6CD | 0.080 |
| Tritanopia (no blue cones) | #00C1BF | 0.048 |
| Achromatopsia (no color) | #ACACAC | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57B9CD
#57B9CD
oklch(73.5% 0.096 213)
- #DF9382
#DF9382
oklch(73.5% 0.096 33.2)
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 #57B9CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.046
- Vivid Sky Blue #4CC9F0 ΔE 0.057
- Topaz #13BBAF ΔE 0.060
- Dark Turquoise #00CED1 ΔE 0.061
- Light Sea Green #20B2AA ΔE 0.064
- Greyblue #77A1B5 ΔE 0.067
- Medium Turquoise #48D1CC ΔE 0.068
- Bluegrey #85A3B2 ΔE 0.069
Use #57B9CD 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.