#5B6091
Closest named color: Dusky Blue (#475F94). oklch(50.6% 0.078 278.8), rgb(91, 96, 145).
Aa
White text reads best on this color (5.95:1).
About this color
#5B6091 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.078 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.028 away. White text reads best on it, at 5.95:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.52:1 |
| White text | 5.95:1 |
Values
| HEX | #5B6091 |
| RGB | rgb(91, 96, 145) |
| HSL | hsl(234, 23%, 46%) |
| OKLCH | oklch(50.6% 0.078 278.8) |
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 #5B6091 | 5.95:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #5B6091 | 3.52:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #5B6091 text on white | 5.95:1 | AA | Lc 79.7 | Fine for body text |
| #5B6091 text on black | 3.52:1 | AA large text | Lc -22.1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E7
oklch(88.5% 0.021 279.9)
-
Step 300
300
#BBBFD9
oklch(81% 0.037 278.6)
-
Step 400
400
#989DC6
oklch(70.6% 0.06 279.3)
-
Step 500
500
#7F85B8
oklch(63.1% 0.077 278.8)
-
Step 600
600
#686EA4
oklch(55.6% 0.084 278.4)
-
Step 700
700 (this color)
#5B6091
oklch(50.6% 0.078 278.8)
-
Step 800
800
#474B72
oklch(42.7% 0.065 278.8)
-
Step 900
900
#3C3F5C
oklch(37.8% 0.05 279.2)
-
Step 950
950
#232536
oklch(27% 0.032 278.9)
#5B6091 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) | #506693 | 0.021 |
| Deuteranopia (no green cones) | #4D6290 | 0.020 |
| Tritanopia (no blue cones) | #4C6972 | 0.068 |
| Achromatopsia (no color) | #646464 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6091
#5B6091
oklch(50.6% 0.078 278.8)
- #70652D
#70652D
oklch(50.5% 0.077 98.4)
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 #5B6091, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.028
- Denim #3B638C ΔE 0.042
- Dusk #4E5481 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.047
- Twilight #4E518B ΔE 0.049
- Dusty Grape #545775 ΔE 0.049
- French Blue #436BAD ΔE 0.053
- Muted Blue #3B719F ΔE 0.056
Use #5B6091 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.