#536ABB
Closest named color: French Blue (#436BAD). oklch(54.5% 0.129 269.8), rgb(83, 106, 187).
Aa
White text reads best on this color (5.06:1).
About this color
#536ABB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.129 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.030 away. White text reads best on it, at 5.06:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.14:1 |
| White text | 5.06:1 |
Values
| HEX | #536ABB |
| RGB | rgb(83, 106, 187) |
| HSL | hsl(227, 43%, 53%) |
| OKLCH | oklch(54.5% 0.129 269.8) |
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 #536ABB | 5.06:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #536ABB | 4.14:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #536ABB text on white | 5.06:1 | AA | Lc 74.8 | Content text, not long reading |
| #536ABB text on black | 4.14:1 | AA large text | Lc -26.9 | 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
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9EF
oklch(88.5% 0.032 268)
-
Step 300
300
#B2C0E7
oklch(81% 0.057 269.6)
-
Step 400
400
#8A9EDB
oklch(70.7% 0.093 270)
-
Step 500
500
#6D85D1
oklch(63.1% 0.118 269.5)
-
Step 600
600 (this color)
#536ABB
oklch(54.5% 0.129 269.8)
-
Step 700
700
#465BA4
oklch(49.1% 0.119 269.5)
-
Step 800
800
#3A4B85
oklch(42.8% 0.098 269.6)
-
Step 900
900
#313F6B
oklch(37.8% 0.078 269.1)
-
Step 950
950
#1D253E
oklch(27% 0.048 269.5)
#536ABB 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) | #4773BE | 0.026 |
| Deuteranopia (no green cones) | #3A6AB9 | 0.028 |
| Tritanopia (no blue cones) | #177C89 | 0.116 |
| Achromatopsia (no color) | #6E6E6E | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #536ABB
#536ABB
oklch(54.5% 0.129 269.8)
- #8A6C00
#8A6C00
oklch(54.5% 0.111 89.4)
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 #536ABB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.030
- Windows Blue #3778BF ΔE 0.043
- Mid Blue #276AB3 ΔE 0.045
- Flat Blue #3C73A8 ΔE 0.049
- Iris #6258C4 ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.052
- Slate Blue #6A5ACD ΔE 0.059
- Muted Blue #3B719F ΔE 0.059
Use #536ABB 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.