#57A3DF
Closest named color: Cornflower Blue (#6495ED). oklch(69.2% 0.117 244.5), rgb(87, 163, 223).
Aa
Black text reads best on this color (7.70:1).
About this color
#57A3DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.117 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.048 away. Black text reads best on it, at 7.70:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.70:1 |
| White text | 2.72:1 |
Values
| HEX | #57A3DF |
| RGB | rgb(87, 163, 223) |
| HSL | hsl(206, 68%, 61%) |
| OKLCH | oklch(69.2% 0.117 244.5) |
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 #57A3DF | 2.72:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #57A3DF | 7.70:1 | AAA | Lc 51.5 | Large or bold text, headings |
| #57A3DF text on white | 2.72:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #57A3DF text on black | 7.70:1 | AAA | Lc -49.3 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C4DDF3
oklch(88.6% 0.04 244.8)
-
Step 300
300
#99C6ED
oklch(80.8% 0.073 245)
-
Step 400
400 (this color)
#57A3DF
oklch(69.2% 0.117 244.5)
-
Step 500
500
#1B90DC
oklch(63% 0.149 244.5)
-
Step 600
600
#0079BE
oklch(55.6% 0.139 244.6)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950
#052942
oklch(27.1% 0.061 244.2)
#57A3DF 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) | #89A4E2 | 0.054 |
| Deuteranopia (no green cones) | #7697DE | 0.042 |
| Tritanopia (no blue cones) | #00B1B8 | 0.089 |
| Achromatopsia (no color) | #9D9D9D | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57A3DF
#57A3DF
oklch(69.2% 0.117 244.5)
- #CE8B47
#CE8B47
oklch(69.1% 0.117 64)
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 #57A3DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.048
- Chefchaouen Blue #4895EF ΔE 0.052
- Dark Sky Blue #448EE4 ΔE 0.065
- Greyblue #77A1B5 ΔE 0.066
- Faded Blue #658CBB ΔE 0.072
- Turquoise Blue #06B1C4 ΔE 0.073
- Soft Blue #6488EA ΔE 0.078
- Bluegrey #85A3B2 ΔE 0.079
Use #57A3DF 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.