#576DA4
Closest named color: French Blue (#436BAD). oklch(54.1% 0.09 266.8), rgb(87, 109, 164).
Aa
White text reads best on this color (5.08:1).
About this color
#576DA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.090 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.029 away. White text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.12:1 |
| White text | 5.08:1 |
Values
| HEX | #576DA4 |
| RGB | rgb(87, 109, 164) |
| HSL | hsl(223, 31%, 49%) |
| OKLCH | oklch(54.1% 0.09 266.8) |
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 #576DA4 | 5.08:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #576DA4 | 4.12:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #576DA4 text on white | 5.08:1 | AA | Lc 75.0 | Fine for body text |
| #576DA4 text on black | 4.12:1 | AA large text | Lc -26.7 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E9
oklch(88.5% 0.023 266.9)
-
Step 300
300
#B5C1DC
oklch(81% 0.04 266.4)
-
Step 400
400
#8EA0CA
oklch(70.7% 0.065 266.7)
-
Step 500
500
#7388BC
oklch(63.1% 0.082 267.1)
-
Step 600
600 (this color)
#576DA4
oklch(54.1% 0.09 266.8)
-
Step 700
700
#4B5F91
oklch(49.2% 0.084 266.7)
-
Step 800
800
#3E4E75
oklch(42.8% 0.068 266.5)
-
Step 900
900
#34415F
oklch(37.8% 0.054 265.9)
-
Step 950
950
#1F2637
oklch(27% 0.033 266.9)
#576DA4 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) | #5972A6 | 0.015 |
| Deuteranopia (no green cones) | #516BA3 | 0.010 |
| Tritanopia (no blue cones) | #397981 | 0.082 |
| Achromatopsia (no color) | #6E6E6E | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #576DA4
#576DA4
oklch(54.1% 0.09 266.8)
- #866B29
#866B29
oklch(54.1% 0.09 86.4)
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 #576DA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.031
- Dull Blue #49759C ΔE 0.033
- Muted Blue #3B719F ΔE 0.034
- Metallic Blue #4F738E ΔE 0.045
- Stormy Blue #507B9C ΔE 0.046
- Cerulean #457B9D ΔE 0.047
- Dusky Blue #475F94 ΔE 0.051
Use #576DA4 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.