#57A8FF
Closest named color: Cornflower Blue (#6495ED). oklch(71.9% 0.15 252.1), rgb(87, 168, 255).
Aa
Black text reads best on this color (8.45:1).
About this color
#57A8FF is a medium-light, vivid blue. In OKLCH its lightness is 72%, its chroma 0.150 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.051 away. Black text reads best on it, at 8.45:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.45:1 |
| White text | 2.48:1 |
Values
| HEX | #57A8FF |
| RGB | rgb(87, 168, 255) |
| HSL | hsl(211, 100%, 67%) |
| OKLCH | oklch(71.9% 0.15 252.1) |
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 #57A8FF | 2.48:1 | Fails | Lc -53.6 | Large or bold text, headings |
| Black text on #57A8FF | 8.45:1 | AAA | Lc 55.5 | Large or bold text, headings |
| #57A8FF text on white | 2.48:1 | Fails | Lc 48.5 | Large or bold text, headings |
| #57A8FF text on black | 8.45:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DDECFC
oklch(93.7% 0.027 249.9)
-
Step 200
200
#C1DCFB
oklch(88.5% 0.052 252)
-
Step 300
300
#94C5FC
oklch(80.9% 0.094 251.8)
-
Step 400
400 (this color)
#57A8FF
oklch(71.9% 0.15 252.1)
-
Step 500
500
#008AF7
oklch(63.1% 0.19 252.2)
-
Step 600
600
#0074D1
oklch(55.7% 0.167 252.1)
-
Step 700
700
#0061B0
oklch(49% 0.147 252)
-
Step 800
800
#004F92
oklch(42.6% 0.129 252.3)
-
Step 900
900
#00427B
oklch(37.7% 0.113 252.1)
-
Step 950
950
#01274B
oklch(27% 0.078 251.6)
#57A8FF 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) | #82ADFF | 0.046 |
| Deuteranopia (no green cones) | #6A9DFD | 0.031 |
| Tritanopia (no blue cones) | #00BCC8 | 0.117 |
| Achromatopsia (no color) | #A4A4A4 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57A8FF
#57A8FF
oklch(71.9% 0.15 252.1)
- #DD9212
#DD9212
oklch(71.8% 0.15 72)
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 #57A8FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.051
- Chefchaouen Blue #4895EF ΔE 0.056
- Deep Sky Blue #00BFFF ΔE 0.065
- Periwinkle Blue #8F99FB ΔE 0.065
- Carolina Blue #8AB8FE ΔE 0.071
- Dodger Blue #1E90FF ΔE 0.078
- Dark Sky Blue #448EE4 ΔE 0.079
- Soft Blue #6488EA ΔE 0.083
Use #57A8FF 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.