#57A8FA
Closest named color: Cornflower Blue (#6495ED). oklch(71.7% 0.144 250.8), rgb(87, 168, 250).
Aa
Black text reads best on this color (8.38:1).
About this color
#57A8FA is a medium-light, vivid blue. In OKLCH its lightness is 72%, its chroma 0.144 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.050 away. Black text reads best on it, at 8.38:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.38:1 |
| White text | 2.50:1 |
Values
| HEX | #57A8FA |
| RGB | rgb(87, 168, 250) |
| HSL | hsl(210, 94%, 66%) |
| OKLCH | oklch(71.7% 0.144 250.8) |
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 #57A8FA | 2.50:1 | Fails | Lc -53.9 | Large or bold text, headings |
| Black text on #57A8FA | 8.38:1 | AAA | Lc 55.1 | Large or bold text, headings |
| #57A8FA text on white | 2.50:1 | Fails | Lc 48.9 | Large or bold text, headings |
| #57A8FA text on black | 8.38:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DDECFB
oklch(93.6% 0.026 248.1)
-
Step 200
200
#C1DCFA
oklch(88.4% 0.051 251.1)
-
Step 300
300
#95C5F9
oklch(80.9% 0.09 251)
-
Step 400
400 (this color)
#57A8FA
oklch(71.7% 0.144 250.8)
-
Step 500
500
#008BF2
oklch(63% 0.183 250.9)
-
Step 600
600
#0075CD
oklch(55.6% 0.161 250.9)
-
Step 700
700
#0062AD
oklch(49.1% 0.142 250.8)
-
Step 800
800
#00508F
oklch(42.6% 0.123 250.8)
-
Step 900
900
#004379
oklch(37.8% 0.109 250.7)
-
Step 950
950
#01274A
oklch(27% 0.077 251)
#57A8FA 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) | #84ACFD | 0.048 |
| Deuteranopia (no green cones) | #6D9DF8 | 0.032 |
| Tritanopia (no blue cones) | #00BBC6 | 0.111 |
| Achromatopsia (no color) | #A4A4A4 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57A8FA
#57A8FA
oklch(71.7% 0.144 250.8)
- #DB9224
#DB9224
oklch(71.7% 0.144 71.1)
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 #57A8FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.050
- Chefchaouen Blue #4895EF ΔE 0.055
- Deep Sky Blue #00BFFF ΔE 0.064
- Periwinkle Blue #8F99FB ΔE 0.067
- Carolina Blue #8AB8FE ΔE 0.071
- Dark Sky Blue #448EE4 ΔE 0.077
- Dodger Blue #1E90FF ΔE 0.079
- Soft Blue #6488EA ΔE 0.082
Use #57A8FA 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.