#5664A4
Closest named color: French Blue (#436BAD). oklch(52.1% 0.102 273), rgb(86, 100, 164).
Aa
White text reads best on this color (5.59:1).
About this color
#5664A4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.102 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.029 away. White text reads best on it, at 5.59:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #5664A4 |
| RGB | rgb(86, 100, 164) |
| HSL | hsl(229, 31%, 49%) |
| OKLCH | oklch(52.1% 0.102 273) |
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 #5664A4 | 5.59:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #5664A4 | 3.75:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #5664A4 text on white | 5.59:1 | AA | Lc 77.9 | Fine for body text |
| #5664A4 text on black | 3.75:1 | AA large text | Lc -23.9 | 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 700.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D3D8EC
oklch(88.4% 0.028 274.6)
-
Step 300
300
#B6BFE1
oklch(80.9% 0.049 273.6)
-
Step 400
400
#909ED3
oklch(70.8% 0.079 272.8)
-
Step 500
500
#7585C7
oklch(63.1% 0.101 272.8)
-
Step 600
600
#5E6EB4
oklch(55.7% 0.11 272.6)
-
Step 700
700 (this color)
#5664A4
oklch(52.1% 0.102 273)
-
Step 800
800
#404B7D
oklch(42.7% 0.084 273)
-
Step 900
900
#363F65
oklch(37.8% 0.066 272.7)
-
Step 950
950
#20253B
oklch(27.1% 0.042 273.5)
#5664A4 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) | #4C6BA7 | 0.021 |
| Deuteranopia (no green cones) | #4565A3 | 0.021 |
| Tritanopia (no blue cones) | #39717C | 0.091 |
| Achromatopsia (no color) | #686868 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5664A4
#5664A4
oklch(52.1% 0.102 273)
- #7E670D
#7E670D
oklch(52.2% 0.103 92.7)
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 #5664A4, closest first.
No curated palette has a color within ΔE 0.04 of #5664A4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.029
- Dusky Blue #475F94 ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.047
- Muted Blue #3B719F ΔE 0.047
- Mid Blue #276AB3 ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.053
- Denim #3B638C ΔE 0.053
- Dull Blue #49759C ΔE 0.054
Use #5664A4 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.