#5B6099
Closest named color: Dusky Blue (#475F94). oklch(51% 0.09 278.9), rgb(91, 96, 153).
Aa
White text reads best on this color (5.86:1).
About this color
#5B6099 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.090 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.029 away. White text reads best on it, at 5.86:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.57:1 |
| White text | 5.86:1 |
Values
| HEX | #5B6099 |
| RGB | rgb(91, 96, 153) |
| HSL | hsl(235, 25%, 48%) |
| OKLCH | oklch(51% 0.09 278.9) |
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 #5B6099 | 5.86:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #5B6099 | 3.57:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #5B6099 text on white | 5.86:1 | AA | Lc 79.3 | Fine for body text |
| #5B6099 text on black | 3.57:1 | AA large text | Lc -22.5 | 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 700.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D5D8E9
oklch(88.5% 0.023 277.9)
-
Step 300
300
#BABEDD
oklch(80.8% 0.044 279.6)
-
Step 400
400
#979DCC
oklch(70.8% 0.069 278.8)
-
Step 500
500
#7D84BF
oklch(63.1% 0.089 278.3)
-
Step 600
600
#676DAB
oklch(55.6% 0.096 278.6)
-
Step 700
700 (this color)
#5B6099
oklch(51% 0.09 278.9)
-
Step 800
800
#464A77
oklch(42.6% 0.075 278.9)
-
Step 900
900
#3B3E60
oklch(37.7% 0.058 279.3)
-
Step 950
950
#222538
oklch(27.1% 0.036 276.8)
#5B6099 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) | #4D679B | 0.025 |
| Deuteranopia (no green cones) | #496298 | 0.025 |
| Tritanopia (no blue cones) | #486B75 | 0.079 |
| Achromatopsia (no color) | #656565 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6099
#5B6099
oklch(51% 0.09 278.9)
- #736720
#736720
oklch(51.1% 0.091 99.5)
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 #5B6099, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.029
- French Blue #436BAD ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.048
- Denim #3B638C ΔE 0.048
- Twilight #4E518B ΔE 0.050
- Dusk #4E5481 ΔE 0.052
- Muted Blue #3B719F ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.060
Use #5B6099 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.