#576C91
Closest named color: Metallic Blue (#4F738E). oklch(52.9% 0.064 261.5), rgb(87, 108, 145).
Aa
White text reads best on this color (5.30:1).
About this color
#576C91 is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.064 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.024 away. White text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.95:1 |
| White text | 5.30:1 |
Values
| HEX | #576C91 |
| RGB | rgb(87, 108, 145) |
| HSL | hsl(218, 25%, 45%) |
| OKLCH | oklch(52.9% 0.064 261.5) |
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 #576C91 | 5.30:1 | AA | Lc -81.7 | Fine for body text |
| Black text on #576C91 | 3.95:1 | AA large text | Lc 27.7 | Dividers and decoration only |
| #576C91 text on white | 5.30:1 | AA | Lc 76.3 | Fine for body text |
| #576C91 text on black | 3.95:1 | AA large text | Lc -25.4 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D3D9E4
oklch(88.4% 0.016 262.7)
-
Step 300
300
#B6C1D4
oklch(80.8% 0.029 261.5)
-
Step 400
400
#91A1BE
oklch(70.6% 0.046 262.3)
-
Step 500
500
#768AAE
oklch(63.1% 0.059 262.1)
-
Step 600
600 (this color)
#576C91
oklch(52.9% 0.064 261.5)
-
Step 700
700
#4E6183
oklch(49.1% 0.06 261.8)
-
Step 800
800
#404F6A
oklch(42.6% 0.049 261.9)
-
Step 900
900
#364256
oklch(37.7% 0.038 260.5)
-
Step 950
950
#202732
oklch(27.1% 0.023 259.3)
#576C91 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) | #5F6E93 | 0.013 |
| Deuteranopia (no green cones) | #596990 | 0.009 |
| Tritanopia (no blue cones) | #447479 | 0.057 |
| Achromatopsia (no color) | #6B6B6B | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #576C91
#576C91
oklch(52.9% 0.064 261.5)
- #7E683F
#7E683F
oklch(52.9% 0.064 82.2)
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 #576C91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.024
- Dull Blue #49759C ΔE 0.029
- Muted Blue #3B719F ΔE 0.035
- Stormy Blue #507B9C ΔE 0.042
- Flat Blue #3C73A8 ΔE 0.044
- Cerulean #457B9D ΔE 0.044
- Denim #3B638C ΔE 0.046
- Dusky Blue #475F94 ΔE 0.047
Use #576C91 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.