#576CBC
Closest named color: French Blue (#436BAD). oklch(55.3% 0.127 270.7), rgb(87, 108, 188).
Aa
White text reads best on this color (4.91:1).
About this color
#576CBC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.127 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.035 away. White text reads best on it, at 4.91:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.27:1 |
| White text | 4.91:1 |
Values
| HEX | #576CBC |
| RGB | rgb(87, 108, 188) |
| HSL | hsl(228, 43%, 54%) |
| OKLCH | oklch(55.3% 0.127 270.7) |
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 #576CBC | 4.91:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #576CBC | 4.27:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #576CBC text on white | 4.91:1 | AA | Lc 73.9 | Content text, not long reading |
| #576CBC text on black | 4.27:1 | AA large text | Lc -27.8 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D1D9EF
oklch(88.6% 0.031 269.8)
-
Step 300
300
#B2BFE6
oklch(80.8% 0.057 270.6)
-
Step 400
400
#8B9EDA
oklch(70.7% 0.091 270.5)
-
Step 500
500
#6F85D0
oklch(63.2% 0.116 270.4)
-
Step 600
600 (this color)
#576CBC
oklch(55.3% 0.127 270.7)
-
Step 700
700
#485BA3
oklch(49.2% 0.117 270.5)
-
Step 800
800
#3B4A84
oklch(42.6% 0.098 270.8)
-
Step 900
900
#323E6A
oklch(37.6% 0.077 270.8)
-
Step 950
950
#1E253E
oklch(27.1% 0.048 271.1)
#576CBC 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) | #4A75BF | 0.026 |
| Deuteranopia (no green cones) | #3F6CBA | 0.028 |
| Tritanopia (no blue cones) | #257D8B | 0.112 |
| Achromatopsia (no color) | #717171 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #576CBC
#576CBC
oklch(55.3% 0.127 270.7)
- #8B6F00
#8B6F00
oklch(55.3% 0.113 91.2)
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 #576CBC, closest first.
No curated palette has a color within ΔE 0.04 of #576CBC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.035
- Windows Blue #3778BF ΔE 0.042
- Flat Blue #3C73A8 ΔE 0.050
- Mid Blue #276AB3 ΔE 0.051
- Dark Periwinkle #665FD1 ΔE 0.052
- Iris #6258C4 ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.059
- Muted Blue #3B719F ΔE 0.060
Use #576CBC 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.