#5771BD
Closest named color: Windows Blue (#3778BF). oklch(56.4% 0.122 268.1), rgb(87, 113, 189).
Aa
White text reads best on this color (4.66:1).
About this color
#5771BD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.122 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 4.66:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.50:1 |
| White text | 4.66:1 |
Values
| HEX | #5771BD |
| RGB | rgb(87, 113, 189) |
| HSL | hsl(225, 44%, 54%) |
| OKLCH | oklch(56.4% 0.122 268.1) |
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 #5771BD | 4.66:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #5771BD | 4.50:1 | AA | Lc 31.8 | Non-text elements, placeholder text |
| #5771BD text on white | 4.66:1 | AA | Lc 72.2 | Content text, not long reading |
| #5771BD text on black | 4.50:1 | AA | Lc -29.4 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
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
#B1C0E5
oklch(80.9% 0.055 267.8)
-
Step 400
400
#899FD8
oklch(70.7% 0.088 267.9)
-
Step 500
500
#6C86CD
oklch(63% 0.112 267.9)
-
Step 600
600 (this color)
#5771BD
oklch(56.4% 0.122 268.1)
-
Step 700
700
#455CA1
oklch(49.1% 0.114 268.1)
-
Step 800
800
#394C82
oklch(42.8% 0.093 267.8)
-
Step 900
900
#313F68
oklch(37.6% 0.073 268.5)
-
Step 950
950
#1D253D
oklch(26.9% 0.046 269.1)
#5771BD 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) | #5279C0 | 0.021 |
| Deuteranopia (no green cones) | #4670BB | 0.020 |
| Tritanopia (no blue cones) | #22818E | 0.108 |
| Achromatopsia (no color) | #747474 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5771BD
#5771BD
oklch(56.4% 0.122 268.1)
- #927100
#927100
oklch(56.5% 0.116 88.3)
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 #5771BD, 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 0.039
- Flat Blue #3C73A8 ΔE 0.047
- Steel Blue #4682B4 ΔE 0.054
- Cool Blue #4984B8 ΔE 0.056
- Mid Blue #276AB3 ΔE 0.056
- Muted Blue #3B719F ΔE 0.059
- Dull Blue #49759C ΔE 0.059
Use #5771BD 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.