#57A2EE
Closest named color: Cornflower Blue (#6495ED). oklch(69.7% 0.135 250.6), rgb(87, 162, 238).
Aa
Black text reads best on this color (7.80:1).
About this color
#57A2EE is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.135 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.035 away. Black text reads best on it, at 7.80:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.80:1 |
| White text | 2.68:1 |
Values
| HEX | #57A2EE |
| RGB | rgb(87, 162, 238) |
| HSL | hsl(210, 82%, 64%) |
| OKLCH | oklch(69.7% 0.135 250.6) |
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 #57A2EE | 2.68:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #57A2EE | 7.80:1 | AAA | Lc 52.1 | Large or bold text, headings |
| #57A2EE text on white | 2.68:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #57A2EE text on black | 7.80:1 | AAA | Lc -49.9 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEECFA
oklch(93.7% 0.024 248.1)
-
Step 200
200
#C3DCF8
oklch(88.5% 0.047 251.3)
-
Step 300
300
#98C5F6
oklch(80.9% 0.085 251)
-
Step 400
400 (this color)
#57A2EE
oklch(69.7% 0.135 250.6)
-
Step 500
500
#198CED
oklch(63.1% 0.173 250.7)
-
Step 600
600
#0075CC
oklch(55.6% 0.16 250.6)
-
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
#004378
oklch(37.8% 0.108 250.3)
-
Step 950
950
#042748
oklch(26.9% 0.073 251.2)
#57A2EE 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) | #81A6F1 | 0.046 |
| Deuteranopia (no green cones) | #6C97EC | 0.032 |
| Tritanopia (no blue cones) | #00B4BD | 0.107 |
| Achromatopsia (no color) | #9E9E9E | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57A2EE
#57A2EE
oklch(69.7% 0.135 250.6)
- #D28D2C
#D28D2C
oklch(69.7% 0.135 70.4)
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 #57A2EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.035
- Chefchaouen Blue #4895EF ΔE 0.040
- Dark Sky Blue #448EE4 ΔE 0.059
- Soft Blue #6488EA ΔE 0.068
- Periwinkle Blue #8F99FB ΔE 0.068
- Dodger Blue #1E90FF ΔE 0.072
- Deep Sky Blue #00BFFF ΔE 0.077
- Perrywinkle #8F8CE7 ΔE 0.078
Use #57A2EE 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.