#536DAF
Closest named color: French Blue (#436BAD). oklch(54.5% 0.108 266.6), rgb(83, 109, 175).
Aa
White text reads best on this color (5.03:1).
About this color
#536DAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.108 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.020 away. White text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.17:1 |
| White text | 5.03:1 |
Values
| HEX | #536DAF |
| RGB | rgb(83, 109, 175) |
| HSL | hsl(223, 37%, 51%) |
| OKLCH | oklch(54.5% 0.108 266.6) |
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 #536DAF | 5.03:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #536DAF | 4.17:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #536DAF text on white | 5.03:1 | AA | Lc 74.6 | Content text, not long reading |
| #536DAF text on black | 4.17:1 | AA large text | Lc -27.1 | 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
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D1D9EC
oklch(88.5% 0.028 267.5)
-
Step 300
300
#B2C0E1
oklch(80.8% 0.049 267.1)
-
Step 400
400
#8AA0D2
oklch(70.7% 0.078 266)
-
Step 500
500
#6E87C6
oklch(63% 0.1 267)
-
Step 600
600 (this color)
#536DAF
oklch(54.5% 0.108 266.6)
-
Step 700
700
#465E9A
oklch(49.1% 0.101 266.3)
-
Step 800
800
#3A4D7D
oklch(42.8% 0.084 266.6)
-
Step 900
900
#324064
oklch(37.7% 0.065 267.1)
-
Step 950
950
#1D263B
oklch(27.1% 0.041 266)
#536DAF 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) | #5373B2 | 0.017 |
| Deuteranopia (no green cones) | #486BAE | 0.015 |
| Tritanopia (no blue cones) | #277B85 | 0.097 |
| Achromatopsia (no color) | #6F6F6F | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #536DAF
#536DAF
oklch(54.5% 0.108 266.6)
- #8B6B0C
#8B6B0C
oklch(54.5% 0.108 87.1)
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 #536DAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.020
- Flat Blue #3C73A8 ΔE 0.032
- Muted Blue #3B719F ΔE 0.040
- Windows Blue #3778BF ΔE 0.041
- Dull Blue #49759C ΔE 0.044
- Mid Blue #276AB3 ΔE 0.045
- Nice Blue #107AB0 ΔE 0.056
- Stormy Blue #507B9C ΔE 0.056
Use #536DAF 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.