#576FB8
Closest named color: French Blue (#436BAD). oklch(55.7% 0.117 268.7), rgb(87, 111, 184).
Aa
White text reads best on this color (4.80:1).
About this color
#576FB8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.117 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.032 away. White text reads best on it, at 4.80:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.37:1 |
| White text | 4.80:1 |
Values
| HEX | #576FB8 |
| RGB | rgb(87, 111, 184) |
| HSL | hsl(225, 41%, 53%) |
| OKLCH | oklch(55.7% 0.117 268.7) |
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 #576FB8 | 4.80:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #576FB8 | 4.37:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #576FB8 text on white | 4.80:1 | AA | Lc 73.2 | Content text, not long reading |
| #576FB8 text on black | 4.37:1 | AA large text | Lc -28.5 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D1D9ED
oklch(88.5% 0.029 268.3)
-
Step 300
300
#B2C0E4
oklch(80.9% 0.053 268.5)
-
Step 400
400
#8B9FD6
oklch(70.8% 0.084 268.8)
-
Step 500
500
#6E86CB
oklch(63.1% 0.108 268.6)
-
Step 600
600 (this color)
#576FB8
oklch(55.7% 0.117 268.7)
-
Step 700
700
#475C9E
oklch(49% 0.109 268.8)
-
Step 800
800
#3A4C80
oklch(42.7% 0.089 268.1)
-
Step 900
900
#323F67
oklch(37.6% 0.071 269.2)
-
Step 950
950
#1D253C
oklch(26.9% 0.045 268.7)
#576FB8 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) | #5277BB | 0.021 |
| Deuteranopia (no green cones) | #476EB6 | 0.020 |
| Tritanopia (no blue cones) | #297F8A | 0.106 |
| Achromatopsia (no color) | #727272 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #576FB8
#576FB8
oklch(55.7% 0.117 268.7)
- #8F6F00
#8F6F00
oklch(55.8% 0.114 88.6)
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 #576FB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.032
- Windows Blue #3778BF ΔE 0.037
- Flat Blue #3C73A8 ΔE 0.042
- Mid Blue #276AB3 ΔE 0.052
- Muted Blue #3B719F ΔE 0.053
- Dull Blue #49759C ΔE 0.054
- Steel Blue #4682B4 ΔE 0.056
- Cool Blue #4984B8 ΔE 0.059
Use #576FB8 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.