#5B669E
Closest named color: French Blue (#436BAD). oklch(52.6% 0.089 274.5), rgb(91, 102, 158).
Aa
White text reads best on this color (5.47:1).
About this color
#5B669E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.089 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.036 away. White text reads best on it, at 5.47:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.83:1 |
| White text | 5.47:1 |
Values
| HEX | #5B669E |
| RGB | rgb(91, 102, 158) |
| HSL | hsl(230, 27%, 49%) |
| OKLCH | oklch(52.6% 0.089 274.5) |
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 #5B669E | 5.47:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #5B669E | 3.83:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #5B669E text on white | 5.47:1 | AA | Lc 77.2 | Fine for body text |
| #5B669E text on black | 3.83:1 | AA large text | Lc -24.5 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E8
oklch(88.4% 0.022 274.7)
-
Step 300
300
#B8BFDB
oklch(80.8% 0.04 274.4)
-
Step 400
400
#949EC9
oklch(70.7% 0.064 274.5)
-
Step 500
500
#7A86BB
oklch(63.1% 0.081 274)
-
Step 600
600 (this color)
#5B669E
oklch(52.6% 0.089 274.5)
-
Step 700
700
#525D90
oklch(49.2% 0.083 273.7)
-
Step 800
800
#444C75
oklch(42.8% 0.069 274.7)
-
Step 900
900
#393F5E
oklch(37.6% 0.054 275.1)
-
Step 950
950
#212537
oklch(26.9% 0.034 274.3)
#5B669E 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) | #536CA0 | 0.018 |
| Deuteranopia (no green cones) | #4D679D | 0.019 |
| Tritanopia (no blue cones) | #45717A | 0.080 |
| Achromatopsia (no color) | #696969 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B669E
#5B669E
oklch(52.6% 0.089 274.5)
- #7B6925
#7B6925
oklch(52.4% 0.089 94.2)
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 #5B669E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.036
- Dusky Blue #475F94 ΔE 0.038
- Muted Blue #3B719F ΔE 0.045
- Flat Blue #3C73A8 ΔE 0.046
- Dull Blue #49759C ΔE 0.047
- Denim #3B638C ΔE 0.052
- Metallic Blue #4F738E ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.057
Use #5B669E 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.