#0574C6
Closest named color: Windows Blue (#3778BF). oklch(55% 0.153 249.8), rgb(5, 116, 198).
Aa
White text reads best on this color (4.86:1).
About this color
#0574C6 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.153 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.030 away. White text reads best on it, at 4.86:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.32:1 |
| White text | 4.86:1 |
Values
| HEX | #0574C6 |
| RGB | rgb(5, 116, 198) |
| HSL | hsl(205, 95%, 40%) |
| OKLCH | oklch(55% 0.153 249.8) |
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 #0574C6 | 4.86:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #0574C6 | 4.32:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #0574C6 text on white | 4.86:1 | AA | Lc 73.0 | Content text, not long reading |
| #0574C6 text on black | 4.32:1 | AA large text | Lc -28.7 | Dividers and decoration only |
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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300
#9FC5EC
oklch(80.9% 0.069 249.4)
-
Step 400
400
#69A5E3
oklch(70.6% 0.111 250.4)
-
Step 500
500
#3B8EDB
oklch(63.2% 0.141 249.7)
-
Step 600
600 (this color)
#0574C6
oklch(55% 0.153 249.8)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#04518C
oklch(42.7% 0.118 249.7)
-
Step 900
900
#124470
oklch(37.8% 0.091 249.5)
-
Step 950
950
#0D2842
oklch(27.1% 0.059 250.2)
#0574C6 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) | #4A7AC9 | 0.047 |
| Deuteranopia (no green cones) | #296AC4 | 0.027 |
| Tritanopia (no blue cones) | #008893 | 0.111 |
| Achromatopsia (no color) | #717171 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0574C6
#0574C6
oklch(55% 0.153 249.8)
- #9D6300
#9D6300
oklch(55% 0.119 70)
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 #0574C6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.030
- Mid Blue #276AB3 ΔE 0.037
- Nice Blue #107AB0 ΔE 0.042
- French Blue #436BAD ΔE 0.050
- Flat Blue #3C73A8 ΔE 0.052
- Water Blue #0E87CC ΔE 0.053
- Royal Blue #4169E1 ΔE 0.061
- Muted Blue #3B719F ΔE 0.063
Use #0574C6 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.