#5372CA
Closest named color: Windows Blue (#3778BF). oklch(57.2% 0.14 267.3), rgb(83, 114, 202).
Aa
Black text reads best on this color (4.62:1).
About this color
#5372CA is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.140 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.036 away. Black text reads best on it, at 4.62:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.62:1 |
| White text | 4.53:1 |
Values
| HEX | #5372CA |
| RGB | rgb(83, 114, 202) |
| HSL | hsl(224, 53%, 56%) |
| OKLCH | oklch(57.2% 0.14 267.3) |
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 #5372CA | 4.53:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #5372CA | 4.62:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #5372CA text on white | 4.53:1 | AA | Lc 71.3 | Content text, not long reading |
| #5372CA text on black | 4.62:1 | AA | Lc -30.4 | 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
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F1
oklch(88.5% 0.035 267.6)
-
Step 300
300
#AEC0EA
oklch(80.8% 0.063 266.8)
-
Step 400
400
#859FE0
oklch(70.8% 0.1 267.1)
-
Step 500
500
#6785D7
oklch(63.1% 0.129 267.5)
-
Step 600
600 (this color)
#5372CA
oklch(57.2% 0.14 267.3)
-
Step 700
700
#405BAA
oklch(49.1% 0.13 267.3)
-
Step 800
800
#354B8A
oklch(42.8% 0.108 267.3)
-
Step 900
900
#2E3F6E
oklch(37.8% 0.084 267.4)
-
Step 950
950
#1B2540
oklch(27% 0.052 267.5)
#5372CA 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) | #4A7CCD | 0.027 |
| Deuteranopia (no green cones) | #3A71C8 | 0.026 |
| Tritanopia (no blue cones) | #008694 | 0.124 |
| Achromatopsia (no color) | #767676 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5372CA
#5372CA
oklch(57.2% 0.14 267.3)
- #957200
#957200
oklch(57.1% 0.117 87.2)
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 #5372CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.036
- Royal Blue #4169E1 ΔE 0.049
- French Blue #436BAD ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.053
- Flat Blue #3C73A8 ΔE 0.061
- Mid Blue #276AB3 ΔE 0.062
- Cool Blue #4984B8 ΔE 0.062
- Steel Blue #4682B4 ΔE 0.062
Use #5372CA 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.