#057EB6
Closest named color: Nice Blue (#107AB0). oklch(56.4% 0.125 238.5), rgb(5, 126, 182).
Aa
Black text reads best on this color (4.66:1).
About this color
#057EB6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.125 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.013 away. Black text reads best on it, at 4.66:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.66:1 |
| White text | 4.50:1 |
Values
| HEX | #057EB6 |
| RGB | rgb(5, 126, 182) |
| HSL | hsl(199, 95%, 37%) |
| OKLCH | oklch(56.4% 0.125 238.5) |
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 #057EB6 | 4.50:1 | AA | Lc -76.1 | Fine for body text |
| Black text on #057EB6 | 4.66:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #057EB6 text on white | 4.50:1 | AA | Lc 70.6 | Content text, not long reading |
| #057EB6 text on black | 4.66:1 | AA | Lc -31.0 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDEC
oklch(88.6% 0.031 237.6)
-
Step 300
300
#A0C6E1
oklch(80.8% 0.056 239.3)
-
Step 400
400
#69A9D2
oklch(70.8% 0.089 238)
-
Step 500
500
#3992C7
oklch(63% 0.115 238.8)
-
Step 600
600 (this color)
#057EB6
oklch(56.4% 0.125 238.5)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#104665
oklch(37.6% 0.076 239.3)
-
Step 950
950
#0C293B
oklch(26.9% 0.048 239.4)
#057EB6 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) | #637FB8 | 0.067 |
| Deuteranopia (no green cones) | #4D70B5 | 0.053 |
| Tritanopia (no blue cones) | #008C92 | 0.080 |
| Achromatopsia (no color) | #777777 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #057EB6
#057EB6
oklch(56.4% 0.125 238.5)
- #AA6018
#AA6018
oklch(56.3% 0.124 58.4)
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 #057EB6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.013
- Windows Blue #3778BF ΔE 0.032
- Steel Blue #4682B4 ΔE 0.038
- Blue NCS #118AB2 ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.038
- Water Blue #0E87CC ΔE 0.039
- Cool Blue #4984B8 ΔE 0.043
- Cerulean #457B9D ΔE 0.047
Use #057EB6 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.