#057CB6
Closest named color: Nice Blue (#107AB0). oklch(55.9% 0.126 239.9), rgb(5, 124, 182).
Aa
White text reads best on this color (4.60:1).
About this color
#057CB6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.126 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.010 away. White text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.56:1 |
| White text | 4.60:1 |
Values
| HEX | #057CB6 |
| RGB | rgb(5, 124, 182) |
| HSL | hsl(200, 95%, 37%) |
| OKLCH | oklch(55.9% 0.126 239.9) |
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 #057CB6 | 4.60:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #057CB6 | 4.56:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #057CB6 text on white | 4.60:1 | AA | Lc 71.3 | Content text, not long reading |
| #057CB6 text on black | 4.56:1 | AA | Lc -30.3 | 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
#C7DCEC
oklch(88.4% 0.032 240.7)
-
Step 300
300
#A0C6E2
oklch(80.8% 0.057 240.3)
-
Step 400
400
#69A8D4
oklch(70.6% 0.092 240.3)
-
Step 500
500
#3B92C8
oklch(63.1% 0.116 239.7)
-
Step 600
600 (this color)
#057CB6
oklch(55.9% 0.126 239.9)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#114665
oklch(37.6% 0.075 239.6)
-
Step 950
950
#0D293B
oklch(26.9% 0.047 240.1)
#057CB6 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) | #607DB9 | 0.064 |
| Deuteranopia (no green cones) | #496FB5 | 0.049 |
| Tritanopia (no blue cones) | #008B91 | 0.083 |
| Achromatopsia (no color) | #757575 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #057CB6
#057CB6
oklch(55.9% 0.126 239.9)
- #A95F0E
#A95F0E
oklch(55.9% 0.127 59.7)
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 #057CB6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.010
- Windows Blue #3778BF ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.035
- Steel Blue #4682B4 ΔE 0.041
- Water Blue #0E87CC ΔE 0.043
- Blue NCS #118AB2 ΔE 0.044
- Muted Blue #3B719F ΔE 0.045
- Cool Blue #4984B8 ΔE 0.047
Use #057CB6 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.