#57A6ED
Closest named color: Cornflower Blue (#6495ED). oklch(70.5% 0.13 247.9), rgb(87, 166, 237).
Aa
Black text reads best on this color (8.08:1).
About this color
#57A6ED is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.130 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.046 away. Black text reads best on it, at 8.08:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.08:1 |
| White text | 2.59:1 |
Values
| HEX | #57A6ED |
| RGB | rgb(87, 166, 237) |
| HSL | hsl(208, 81%, 64%) |
| OKLCH | oklch(70.5% 0.13 247.9) |
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 #57A6ED | 2.59:1 | Fails | Lc -55.6 | Large or bold text, headings |
| Black text on #57A6ED | 8.08:1 | AAA | Lc 53.5 | Large or bold text, headings |
| #57A6ED text on white | 2.59:1 | Fails | Lc 50.5 | Large or bold text, headings |
| #57A6ED text on black | 8.08:1 | AAA | Lc -51.4 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEECF9
oklch(93.6% 0.023 246)
-
Step 200
200
#C2DDF6
oklch(88.6% 0.045 246.3)
-
Step 300
300
#97C6F3
oklch(80.9% 0.081 247.8)
-
Step 400
400 (this color)
#57A6ED
oklch(70.5% 0.13 247.9)
-
Step 500
500
#0B8EE8
oklch(63.1% 0.167 247.9)
-
Step 600
600
#0077C5
oklch(55.6% 0.149 247.9)
-
Step 700
700
#0064A7
oklch(49.1% 0.132 247.9)
-
Step 800
800
#00528A
oklch(42.8% 0.115 247.8)
-
Step 900
900
#004474
oklch(37.7% 0.101 247.8)
-
Step 950
950
#032846
oklch(27% 0.069 248.1)
#57A6ED 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) | #87A9F0 | 0.051 |
| Deuteranopia (no green cones) | #739AEC | 0.039 |
| Tritanopia (no blue cones) | #00B7BF | 0.102 |
| Achromatopsia (no color) | #A1A1A1 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57A6ED
#57A6ED
oklch(70.5% 0.13 247.9)
- #D58F39
#D58F39
oklch(70.6% 0.13 67.9)
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 #57A6ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.046
- Chefchaouen Blue #4895EF ΔE 0.051
- Deep Sky Blue #00BFFF ΔE 0.068
- Dark Sky Blue #448EE4 ΔE 0.069
- Periwinkle Blue #8F99FB ΔE 0.072
- Carolina Blue #8AB8FE ΔE 0.077
- Soft Blue #6488EA ΔE 0.079
- Dodger Blue #1E90FF ΔE 0.081
Use #57A6ED 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.