#4571C2
Closest named color: Windows Blue (#3778BF). oklch(55.7% 0.135 261.6), rgb(69, 113, 194).
Aa
White text reads best on this color (4.77:1).
About this color
#4571C2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.135 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.023 away. White text reads best on it, at 4.77:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.39:1 |
| White text | 4.77:1 |
Values
| HEX | #4571C2 |
| RGB | rgb(69, 113, 194) |
| HSL | hsl(219, 51%, 52%) |
| OKLCH | oklch(55.7% 0.135 261.6) |
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 #4571C2 | 4.77:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #4571C2 | 4.39:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #4571C2 text on white | 4.77:1 | AA | Lc 72.9 | Content text, not long reading |
| #4571C2 text on black | 4.39:1 | AA large text | Lc -28.8 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF0
oklch(88.5% 0.033 261)
-
Step 300
300
#ABC2E9
oklch(81% 0.061 261)
-
Step 400
400
#7FA1DE
oklch(70.8% 0.098 261.7)
-
Step 500
500
#5E88D4
oklch(63% 0.124 261.5)
-
Step 600
600 (this color)
#4571C2
oklch(55.7% 0.135 261.6)
-
Step 700
700
#365EA7
oklch(49.1% 0.126 261.4)
-
Step 800
800
#2D4D87
oklch(42.6% 0.104 261.3)
-
Step 900
900
#29416C
oklch(37.8% 0.08 261.3)
-
Step 950
950
#18263F
oklch(27% 0.051 261.4)
#4571C2 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) | #4C79C5 | 0.024 |
| Deuteranopia (no green cones) | #396DC0 | 0.017 |
| Tritanopia (no blue cones) | #008390 | 0.112 |
| Achromatopsia (no color) | #727272 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4571C2
#4571C2
oklch(55.7% 0.135 261.6)
- #956B00
#956B00
oklch(55.6% 0.115 81.4)
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 #4571C2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.023
- French Blue #436BAD ΔE 0.035
- Mid Blue #276AB3 ΔE 0.042
- Flat Blue #3C73A8 ΔE 0.044
- Nice Blue #107AB0 ΔE 0.052
- Royal Blue #4169E1 ΔE 0.055
- Steel Blue #4682B4 ΔE 0.057
- Muted Blue #3B719F ΔE 0.057
Use #4571C2 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.