#57AED9
Closest named color: Turquoise Blue (#06B1C4). oklch(71.4% 0.105 232.3), rgb(87, 174, 217).
Aa
Black text reads best on this color (8.46:1).
About this color
#57AED9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.105 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.052 away. Black text reads best on it, at 8.46:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.46:1 |
| White text | 2.48:1 |
Values
| HEX | #57AED9 |
| RGB | rgb(87, 174, 217) |
| HSL | hsl(200, 63%, 60%) |
| OKLCH | oklch(71.4% 0.105 232.3) |
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 #57AED9 | 2.48:1 | Fails | Lc -53.6 | Large or bold text, headings |
| Black text on #57AED9 | 8.46:1 | AAA | Lc 55.5 | Large or bold text, headings |
| #57AED9 text on white | 2.48:1 | Fails | Lc 48.5 | Large or bold text, headings |
| #57AED9 text on black | 8.46:1 | AAA | Lc -53.4 | 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
#DEECF5
oklch(93.5% 0.019 235.7)
-
Step 200
200
#C2DEED
oklch(88.5% 0.036 231.1)
-
Step 300
300
#96C9E4
oklch(81% 0.065 231.7)
-
Step 400
400 (this color)
#57AED9
oklch(71.4% 0.105 232.3)
-
Step 500
500
#0096CA
oklch(63.2% 0.129 232.1)
-
Step 600
600
#007EAA
oklch(55.7% 0.113 231.8)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800
#005676
oklch(42.6% 0.087 232.3)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3D
oklch(27.1% 0.055 231.9)
#57AED9 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) | #99ACDB | 0.070 |
| Deuteranopia (no green cones) | #879ED8 | 0.061 |
| Tritanopia (no blue cones) | #00BABC | 0.072 |
| Achromatopsia (no color) | #A4A4A4 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57AED9
#57AED9
oklch(71.4% 0.105 232.3)
- #D69064
#D69064
oklch(71.4% 0.104 52.5)
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 #57AED9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.052
- Greyblue #77A1B5 ΔE 0.058
- Deep Sky Blue #00BFFF ΔE 0.064
- Bluegrey #85A3B2 ΔE 0.067
- Bluey Grey #89A0B0 ΔE 0.073
- Vivid Sky Blue #4CC9F0 ΔE 0.073
- Cool Steel #97A7B3 ΔE 0.080
- Carolina Blue #8AB8FE ΔE 0.080
Use #57AED9 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.