#57AED3
Closest named color: Turquoise Blue (#06B1C4). oklch(71.2% 0.099 228.4), rgb(87, 174, 211).
Aa
Black text reads best on this color (8.40:1).
About this color
#57AED3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.099 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.045 away. Black text reads best on it, at 8.40:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.40:1 |
| White text | 2.49:1 |
Values
| HEX | #57AED3 |
| RGB | rgb(87, 174, 211) |
| HSL | hsl(198, 58%, 58%) |
| OKLCH | oklch(71.2% 0.099 228.4) |
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 #57AED3 | 2.49:1 | Fails | Lc -53.9 | Large or bold text, headings |
| Black text on #57AED3 | 8.40:1 | AAA | Lc 55.1 | Large or bold text, headings |
| #57AED3 text on white | 2.49:1 | Fails | Lc 48.9 | Large or bold text, headings |
| #57AED3 text on black | 8.40:1 | AAA | Lc -53.1 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DEEDF3
oklch(93.7% 0.018 223.6)
-
Step 200
200
#C3DEEB
oklch(88.5% 0.034 228.4)
-
Step 300
300
#97C9E1
oklch(80.9% 0.062 229.1)
-
Step 400
400 (this color)
#57AED3
oklch(71.2% 0.099 228.4)
-
Step 500
500
#0097C4
oklch(63.2% 0.123 228.1)
-
Step 600
600
#007FA5
oklch(55.7% 0.108 227.8)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004860
oklch(37.5% 0.074 228.7)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#57AED3 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) | #9BABD5 | 0.073 |
| Deuteranopia (no green cones) | #899ED3 | 0.064 |
| Tritanopia (no blue cones) | #00B9BA | 0.066 |
| Achromatopsia (no color) | #A4A4A4 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57AED3
#57AED3
oklch(71.2% 0.099 228.4)
- #D58F6A
#D58F6A
oklch(71.2% 0.099 48.5)
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 #57AED3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.045
- Greyblue #77A1B5 ΔE 0.052
- Bluegrey #85A3B2 ΔE 0.061
- Bluey Grey #89A0B0 ΔE 0.068
- Deep Sky Blue #00BFFF ΔE 0.070
- Vivid Sky Blue #4CC9F0 ΔE 0.075
- Cool Steel #97A7B3 ΔE 0.075
- Light Sea Green #20B2AA ΔE 0.076
Use #57AED3 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.