#5771BB
Closest named color: Windows Blue (#3778BF). oklch(56.3% 0.119 267.9), rgb(87, 113, 187).
Aa
White text reads best on this color (4.68:1).
About this color
#5771BB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.119 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.034 away. White text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.48:1 |
| White text | 4.68:1 |
Values
| HEX | #5771BB |
| RGB | rgb(87, 113, 187) |
| HSL | hsl(224, 42%, 54%) |
| OKLCH | oklch(56.3% 0.119 267.9) |
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 #5771BB | 4.68:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #5771BB | 4.48:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #5771BB text on white | 4.68:1 | AA | Lc 72.4 | Content text, not long reading |
| #5771BB text on black | 4.48:1 | AA large text | Lc -29.3 | 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
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EE
oklch(88.5% 0.031 267.2)
-
Step 300
300
#B2C0E4
oklch(80.9% 0.053 268.5)
-
Step 400
400
#899FD7
oklch(70.7% 0.086 267.6)
-
Step 500
500
#6D86CC
oklch(63.1% 0.11 268.2)
-
Step 600
600 (this color)
#5771BB
oklch(56.3% 0.119 267.9)
-
Step 700
700
#465D9F
oklch(49.2% 0.109 267.8)
-
Step 800
800
#394C81
oklch(42.7% 0.091 267.6)
-
Step 900
900
#314068
oklch(37.8% 0.071 267.4)
-
Step 950
950
#1D253D
oklch(26.9% 0.046 269.1)
#5771BB 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) | #5379BE | 0.021 |
| Deuteranopia (no green cones) | #4770B9 | 0.019 |
| Tritanopia (no blue cones) | #25818D | 0.106 |
| Achromatopsia (no color) | #747474 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5771BB
#5771BB
oklch(56.3% 0.119 267.9)
- #917000
#917000
oklch(56.2% 0.115 88.1)
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 #5771BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.034
- French Blue #436BAD ΔE 0.037
- Flat Blue #3C73A8 ΔE 0.044
- Steel Blue #4682B4 ΔE 0.053
- Cool Blue #4984B8 ΔE 0.055
- Mid Blue #276AB3 ΔE 0.055
- Muted Blue #3B719F ΔE 0.056
- Dull Blue #49759C ΔE 0.056
Use #5771BB 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.