#57A5FA
Closest named color: Cornflower Blue (#6495ED). oklch(71% 0.147 252.3), rgb(87, 165, 250).
Aa
Black text reads best on this color (8.16:1).
About this color
#57A5FA is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.147 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.042 away. Black text reads best on it, at 8.16:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.16:1 |
| White text | 2.57:1 |
Values
| HEX | #57A5FA |
| RGB | rgb(87, 165, 250) |
| HSL | hsl(211, 94%, 66%) |
| OKLCH | oklch(71% 0.147 252.3) |
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 #57A5FA | 2.57:1 | Fails | Lc -55.1 | Large or bold text, headings |
| Black text on #57A5FA | 8.16:1 | AAA | Lc 54.0 | Large or bold text, headings |
| #57A5FA text on white | 2.57:1 | Fails | Lc 50.0 | Large or bold text, headings |
| #57A5FA text on black | 8.16:1 | AAA | Lc -51.9 | 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
#DEEBFC
oklch(93.5% 0.027 255.1)
-
Step 200
200
#C2DCFB
oklch(88.5% 0.051 252.9)
-
Step 300
300
#96C5FB
oklch(81% 0.092 252.4)
-
Step 400
400 (this color)
#57A5FA
oklch(71% 0.147 252.3)
-
Step 500
500
#0A8AF6
oklch(63.1% 0.188 252.4)
-
Step 600
600
#0074D1
oklch(55.7% 0.167 252.1)
-
Step 700
700
#0061B1
oklch(49.1% 0.148 252.3)
-
Step 800
800
#004F93
oklch(42.7% 0.13 252.6)
-
Step 900
900
#00427B
oklch(37.7% 0.113 252.1)
-
Step 950
950
#02274B
oklch(27.1% 0.078 252)
#57A5FA 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) | #80AAFE | 0.045 |
| Deuteranopia (no green cones) | #699AF8 | 0.031 |
| Tritanopia (no blue cones) | #00B9C4 | 0.116 |
| Achromatopsia (no color) | #A1A1A1 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57A5FA
#57A5FA
oklch(71% 0.147 252.3)
- #D99016
#D99016
oklch(71% 0.147 72.1)
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 #57A5FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.042
- Chefchaouen Blue #4895EF ΔE 0.047
- Periwinkle Blue #8F99FB ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.070
- Deep Sky Blue #00BFFF ΔE 0.071
- Dodger Blue #1E90FF ΔE 0.072
- Soft Blue #6488EA ΔE 0.075
- Carolina Blue #8AB8FE ΔE 0.077
Use #57A5FA 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.