#5366AA
Closest named color: French Blue (#436BAD). oklch(52.7% 0.11 270.5), rgb(83, 102, 170).
Aa
White text reads best on this color (5.45:1).
About this color
#5366AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.110 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.021 away. White text reads best on it, at 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.84:1 |
| White text | 5.45:1 |
Values
| HEX | #5366AA |
| RGB | rgb(83, 102, 170) |
| HSL | hsl(227, 34%, 50%) |
| OKLCH | oklch(52.7% 0.11 270.5) |
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 #5366AA | 5.45:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #5366AA | 3.84:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #5366AA text on white | 5.45:1 | AA | Lc 77.1 | Fine for body text |
| #5366AA text on black | 3.84:1 | AA large text | Lc -24.7 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B4C0E1
oklch(80.9% 0.049 269.5)
-
Step 400
400
#8E9ED3
oklch(70.6% 0.08 271.3)
-
Step 500
500
#7286C7
oklch(63.1% 0.101 270.3)
-
Step 600
600 (this color)
#5366AA
oklch(52.7% 0.11 270.5)
-
Step 700
700
#4B5C9A
oklch(49% 0.102 270.7)
-
Step 800
800
#3D4C7D
oklch(42.7% 0.084 269.7)
-
Step 900
900
#343F65
oklch(37.6% 0.067 270.7)
-
Step 950
950
#1F253B
oklch(27% 0.042 271.7)
#5366AA 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) | #4B6DAD | 0.020 |
| Deuteranopia (no green cones) | #4266A8 | 0.021 |
| Tritanopia (no blue cones) | #2D7480 | 0.097 |
| Achromatopsia (no color) | #696969 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5366AA
#5366AA
oklch(52.7% 0.11 270.5)
- #836700
#836700
oklch(52.7% 0.108 89.9)
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 #5366AA, closest first.
No curated palette has a color within ΔE 0.04 of #5366AA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.021
- Dusky Blue #475F94 ΔE 0.042
- Flat Blue #3C73A8 ΔE 0.042
- Mid Blue #276AB3 ΔE 0.044
- Muted Blue #3B719F ΔE 0.046
- Dull Blue #49759C ΔE 0.054
- Windows Blue #3778BF ΔE 0.056
- Denim Blue #3B5B92 ΔE 0.058
Use #5366AA 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.