#5377CA
Closest named color: Windows Blue (#3778BF). oklch(58.2% 0.134 264.9), rgb(83, 119, 202).
Aa
Black text reads best on this color (4.85:1).
About this color
#5377CA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.134 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.033 away. Black text reads best on it, at 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #5377CA |
| RGB | rgb(83, 119, 202) |
| HSL | hsl(222, 53%, 56%) |
| OKLCH | oklch(58.2% 0.134 264.9) |
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 #5377CA | 4.32:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #5377CA | 4.85:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #5377CA text on white | 4.32:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #5377CA text on black | 4.85:1 | AA | Lc -31.9 | Non-text elements, placeholder text |
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
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CED9F0
oklch(88.4% 0.034 265.2)
-
Step 300
300
#AEC1E9
oklch(81% 0.06 265.1)
-
Step 400
400
#83A0DD
oklch(70.8% 0.096 264.5)
-
Step 500
500
#6487D4
oklch(63.1% 0.123 264.6)
-
Step 600
600 (this color)
#5377CA
oklch(58.2% 0.134 264.9)
-
Step 700
700
#3D5DA7
oklch(49.2% 0.124 264.7)
-
Step 800
800
#324C87
oklch(42.7% 0.103 264.5)
-
Step 900
900
#2C406C
oklch(37.7% 0.08 264.4)
-
Step 950
950
#1A263F
oklch(27.1% 0.05 263.9)
#5377CA 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) | #537FCD | 0.021 |
| Deuteranopia (no green cones) | #4375C8 | 0.019 |
| Tritanopia (no blue cones) | #008997 | 0.116 |
| Achromatopsia (no color) | #7A7A7A | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5377CA
#5377CA
oklch(58.2% 0.134 264.9)
- #9B7400
#9B7400
oklch(58.2% 0.119 85)
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 #5377CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.033
- Cool Blue #4984B8 ΔE 0.051
- Steel Blue #4682B4 ΔE 0.052
- Water Blue #0E87CC ΔE 0.056
- French Blue #436BAD ΔE 0.057
- Royal Blue #4169E1 ΔE 0.059
- Flat Blue #3C73A8 ΔE 0.060
- Off Blue #5684AE ΔE 0.063
Use #5377CA 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.