#0B529D
Closest named color: Dusk Blue (#26538D). oklch(44.3% 0.138 254.9), rgb(11, 82, 157).
Aa
White text reads best on this color (7.75:1).
About this color
#0B529D is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.138 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.030 away. White text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #0B529D |
| RGB | rgb(11, 82, 157) |
| HSL | hsl(211, 87%, 33%) |
| OKLCH | oklch(44.3% 0.138 254.9) |
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 #0B529D | 7.75:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #0B529D | 2.70:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #0B529D text on white | 7.75:1 | AAA | Lc 86.3 | Fine for body text |
| #0B529D text on black | 2.70:1 | Fails | Lc -15.7 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9EC4F4
oklch(81% 0.08 254.5)
-
Step 400
400
#67A3EF
oklch(70.7% 0.128 255)
-
Step 500
500
#398AEA
oklch(63.2% 0.164 254.8)
-
Step 600
600
#0871D8
oklch(55.6% 0.179 254.9)
-
Step 700
700
#005EB9
oklch(49% 0.162 255.1)
-
Step 800
800 (this color)
#0B529D
oklch(44.3% 0.138 254.9)
-
Step 900
900
#114179
oklch(37.7% 0.108 255.2)
-
Step 950
950
#0C2747
oklch(27.1% 0.068 254.6)
#0B529D 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) | #2759A0 | 0.029 |
| Deuteranopia (no green cones) | #004D9C | 0.015 |
| Tritanopia (no blue cones) | #006470 | 0.102 |
| Achromatopsia (no color) | #525252 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B529D
#0B529D
oklch(44.3% 0.138 254.9)
- #714A00
#714A00
oklch(44.2% 0.093 74.5)
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 #0B529D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.030
- Cobalt #1E488F ΔE 0.033
- Light Navy #155084 ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.052
- Blueberry #464196 ΔE 0.065
- Peacock Blue #016795 ΔE 0.065
Use #0B529D 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.