#5B669B
Closest named color: Dusky Blue (#475F94). oklch(52.4% 0.085 274.2), rgb(91, 102, 155).
Aa
White text reads best on this color (5.49:1).
About this color
#5B669B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.085 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.037 away. White text reads best on it, at 5.49:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.81:1 |
| White text | 5.49:1 |
Values
| HEX | #5B669B |
| RGB | rgb(91, 102, 155) |
| HSL | hsl(230, 26%, 48%) |
| OKLCH | oklch(52.4% 0.085 274.2) |
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 #5B669B | 5.49:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #5B669B | 3.81:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #5B669B text on white | 5.49:1 | AA | Lc 77.4 | Fine for body text |
| #5B669B text on black | 3.81:1 | AA large text | Lc -24.4 | 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
#E7E9F1
oklch(93.5% 0.011 274.9)
-
Step 200
200
#D4D8E8
oklch(88.4% 0.022 274.7)
-
Step 300
300
#B9BFDA
oklch(80.9% 0.039 275.6)
-
Step 400
400
#949EC7
oklch(70.6% 0.061 274.1)
-
Step 500
500
#7B86B9
oklch(63.1% 0.078 274.6)
-
Step 600
600 (this color)
#5B669B
oklch(52.4% 0.085 274.2)
-
Step 700
700
#535D8D
oklch(49.1% 0.078 274.2)
-
Step 800
800
#444C73
oklch(42.7% 0.066 274.4)
-
Step 900
900
#39405D
oklch(37.8% 0.051 273.3)
-
Step 950
950
#212536
oklch(26.9% 0.032 273.8)
#5B669B 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) | #546C9D | 0.018 |
| Deuteranopia (no green cones) | #4F669A | 0.016 |
| Tritanopia (no blue cones) | #477179 | 0.076 |
| Achromatopsia (no color) | #696969 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B669B
#5B669B
oklch(52.4% 0.085 274.2)
- #7A692A
#7A692A
oklch(52.4% 0.085 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 #5B669B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.037
- French Blue #436BAD ΔE 0.038
- Muted Blue #3B719F ΔE 0.044
- Dull Blue #49759C ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.047
- Denim #3B638C ΔE 0.049
- Metallic Blue #4F738E ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.056
Use #5B669B 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.