#0B5BA2
Closest named color: Dusk Blue (#26538D). oklch(46.8% 0.134 252), rgb(11, 91, 162).
Aa
White text reads best on this color (6.92:1).
About this color
#0B5BA2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.134 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.038 away. White text reads best on it, at 6.92:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 3.03:1 |
| White text | 6.92:1 |
Values
| HEX | #0B5BA2 |
| RGB | rgb(11, 91, 162) |
| HSL | hsl(208, 87%, 34%) |
| OKLCH | oklch(46.8% 0.134 252) |
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 #0B5BA2 | 6.92:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #0B5BA2 | 3.03:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #0B5BA2 text on white | 6.92:1 | AA | Lc 83.4 | Fine for body text |
| #0B5BA2 text on black | 3.03:1 | AA large text | Lc -18.6 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A3C4EA
oklch(80.9% 0.065 252.2)
-
Step 400
400
#70A4E0
oklch(70.6% 0.104 252.8)
-
Step 500
500
#478DD7
oklch(63.2% 0.132 251.8)
-
Step 600
600
#2575C4
oklch(55.6% 0.144 252)
-
Step 700
700 (this color)
#0B5BA2
oklch(46.8% 0.134 252)
-
Step 800
800
#165089
oklch(42.6% 0.111 252)
-
Step 900
900
#1A436E
oklch(37.7% 0.087 252.1)
-
Step 950
950
#102840
oklch(27.1% 0.054 250.5)
#0B5BA2 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) | #3661A5 | 0.036 |
| Deuteranopia (no green cones) | #1854A1 | 0.019 |
| Tritanopia (no blue cones) | #006C76 | 0.099 |
| Achromatopsia (no color) | #5A5A5A | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B5BA2
#0B5BA2
oklch(46.8% 0.134 252)
- #7C4F00
#7C4F00
oklch(46.7% 0.1 71.9)
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 #0B5BA2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.041
- Peacock Blue #016795 ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.045
- Mid Blue #276AB3 ΔE 0.053
- Light Navy #155084 ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.055
- Dusky Blue #475F94 ΔE 0.055
Use #0B5BA2 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.