#5372AF
Closest named color: Flat Blue (#3C73A8). oklch(55.6% 0.102 263), rgb(83, 114, 175).
Aa
White text reads best on this color (4.77:1).
About this color
#5372AF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.102 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.028 away. White text reads best on it, at 4.77:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.39:1 |
| White text | 4.77:1 |
Values
| HEX | #5372AF |
| RGB | rgb(83, 114, 175) |
| HSL | hsl(220, 37%, 51%) |
| OKLCH | oklch(55.6% 0.102 263) |
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 #5372AF | 4.77:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #5372AF | 4.39:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #5372AF text on white | 4.77:1 | AA | Lc 73.1 | Content text, not long reading |
| #5372AF text on black | 4.39:1 | AA large text | Lc -28.6 | 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
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0D9EB
oklch(88.4% 0.027 264.4)
-
Step 300
300
#B1C1DF
oklch(80.9% 0.046 263)
-
Step 400
400
#88A1CF
oklch(70.7% 0.073 262.4)
-
Step 500
500
#6B89C3
oklch(63.1% 0.094 263)
-
Step 600
600 (this color)
#5372AF
oklch(55.6% 0.102 263)
-
Step 700
700
#445F97
oklch(49.1% 0.096 263.7)
-
Step 800
800
#384E7A
oklch(42.7% 0.078 263.3)
-
Step 900
900
#304162
oklch(37.6% 0.061 262.9)
-
Step 950
950
#1C263A
oklch(26.9% 0.04 263.6)
#5372AF 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) | #5A77B2 | 0.017 |
| Deuteranopia (no green cones) | #4F6FAE | 0.010 |
| Tritanopia (no blue cones) | #267F88 | 0.091 |
| Achromatopsia (no color) | #727272 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5372AF
#5372AF
oklch(55.6% 0.102 263)
- #906D1F
#906D1F
oklch(55.6% 0.102 83.1)
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 #5372AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.028
- French Blue #436BAD ΔE 0.029
- Windows Blue #3778BF ΔE 0.035
- Dull Blue #49759C ΔE 0.036
- Muted Blue #3B719F ΔE 0.038
- Steel Blue #4682B4 ΔE 0.044
- Stormy Blue #507B9C ΔE 0.045
- Cerulean #457B9D ΔE 0.046
Use #5372AF 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.