#0B548F
Closest named color: Dusk Blue (#26538D). oklch(43.8% 0.117 249.7), rgb(11, 84, 143).
Aa
White text reads best on this color (7.83:1).
About this color
#0B548F is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.117 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.016 away. White text reads best on it, at 7.83:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.67:1 |
| White text | 7.83:1 |
Values
| HEX | #0B548F |
| RGB | rgb(11, 84, 143) |
| HSL | hsl(207, 86%, 30%) |
| OKLCH | oklch(43.8% 0.117 249.7) |
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 #0B548F | 7.83:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #0B548F | 2.67:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #0B548F text on white | 7.83:1 | AAA | Lc 86.7 | Fine for body text |
| #0B548F text on black | 2.67:1 | Fails | Lc -15.4 | 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 800.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300
#9FC5EC
oklch(80.9% 0.069 249.4)
-
Step 400
400
#69A5E2
oklch(70.6% 0.11 250)
-
Step 500
500
#3C8EDA
oklch(63.2% 0.139 249.6)
-
Step 600
600
#0D76C7
oklch(55.6% 0.151 249.6)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800 (this color)
#0B548F
oklch(43.8% 0.117 249.7)
-
Step 900
900
#124470
oklch(37.8% 0.091 249.5)
-
Step 950
950
#0D2841
oklch(27% 0.057 249.3)
#0B548F 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) | #375891 | 0.037 |
| Deuteranopia (no green cones) | #214D8E | 0.021 |
| Tritanopia (no blue cones) | #00626A | 0.084 |
| Achromatopsia (no color) | #525252 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B548F
#0B548F
oklch(43.8% 0.117 249.7)
- #734700
#734700
oklch(43.9% 0.095 69.8)
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 #0B548F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.016
- Light Navy #155084 ΔE 0.020
- Deep Sea Blue #015482 ΔE 0.022
- Cobalt #1E488F ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.045
- Peacock Blue #016795 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.058
Use #0B548F 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.