#57BFEC
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(76.1% 0.115 229.4), rgb(87, 191, 236).
Aa
Black text reads best on this color (10.06:1).
About this color
#57BFEC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.115 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.026 away. Black text reads best on it, at 10.06:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.06:1 |
| White text | 2.08:1 |
Values
| HEX | #57BFEC |
| RGB | rgb(87, 191, 236) |
| HSL | hsl(198, 80%, 63%) |
| OKLCH | oklch(76.1% 0.115 229.4) |
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 #57BFEC | 2.08:1 | Fails | Lc -45.1 | Large or bold text, headings |
| Black text on #57BFEC | 10.06:1 | AAA | Lc 63.4 | Content text, not long reading |
| #57BFEC text on white | 2.08:1 | Fails | Lc 40.5 | Non-text elements, placeholder text |
| #57BFEC text on black | 10.06:1 | AAA | Lc -61.8 | Content text, not long reading |
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 300.
-
Step 50
50
#ECF8FE
oklch(97.2% 0.015 229)
-
Step 100
100
#D4EFFC
oklch(93.6% 0.033 228.3)
-
Step 200
200
#AEE2FB
oklch(88.5% 0.064 229)
-
Step 300
300 (this color)
#57BFEC
oklch(76.1% 0.115 229.4)
-
Step 400
400
#00AFE6
oklch(70.6% 0.14 229.8)
-
Step 500
500
#0096C6
oklch(63% 0.126 229.9)
-
Step 600
600
#007EA7
oklch(55.5% 0.111 230)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#004861
oklch(37.6% 0.075 229.8)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#57BFEC 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) | #A8BCEE | 0.082 |
| Deuteranopia (no green cones) | #93ADEB | 0.070 |
| Tritanopia (no blue cones) | #00CCCE | 0.072 |
| Achromatopsia (no color) | #B3B3B3 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57BFEC
#57BFEC
oklch(76.1% 0.115 229.4)
- #ED9B6E
#ED9B6E
oklch(76.2% 0.115 49.1)
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 #57BFEC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.026
- Deep Sky Blue #00BFFF ΔE 0.039
- Bright Sky Blue #02CCFE ΔE 0.042
- Lightblue #7BC8F6 ΔE 0.043
- Sky #82CAFC ΔE 0.055
- Carolina Blue #8AB8FE ΔE 0.059
- Sky Blue #87CEEB ΔE 0.063
- Light Sky Blue #87CEFA ΔE 0.064
Use #57BFEC 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.