#0B3776
Closest named color: Marine Blue (#01386A). oklch(34.9% 0.118 258.6), rgb(11, 55, 118).
Aa
White text reads best on this color (11.52:1).
About this color
#0B3776 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.118 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.022 away. White text reads best on it, at 11.52:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.82:1 |
| White text | 11.52:1 |
Values
| HEX | #0B3776 |
| RGB | rgb(11, 55, 118) |
| HSL | hsl(215, 83%, 25%) |
| OKLCH | oklch(34.9% 0.118 258.6) |
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 #0B3776 | 11.52:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #0B3776 | 1.82:1 | Fails | Lc 7.9 | Not readable |
| #0B3776 text on white | 11.52:1 | AAA | Lc 96.0 | Preferred for body text |
| #0B3776 text on black | 1.82:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9EC2FA
oklch(80.8% 0.089 259.1)
-
Step 400
400
#68A1F8
oklch(70.8% 0.142 258.6)
-
Step 500
500
#3D86F4
oklch(63.1% 0.18 258.7)
-
Step 600
600
#176DE3
oklch(55.7% 0.196 258.5)
-
Step 700
700
#065AC5
oklch(49.1% 0.182 258.5)
-
Step 800
800
#0C4AA0
oklch(42.7% 0.152 258.7)
-
Step 900
900 (this color)
#0B3776
oklch(34.9% 0.118 258.6)
-
Step 950
950
#0D254A
oklch(26.9% 0.075 258.9)
#0B3776 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) | #0C3E78 | 0.021 |
| Deuteranopia (no green cones) | #003575 | 0.009 |
| Tritanopia (no blue cones) | #004651 | 0.088 |
| Achromatopsia (no color) | #393939 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B3776
#0B3776
oklch(34.9% 0.118 258.6)
- #4E3500
#4E3500
oklch(34.9% 0.072 79.5)
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 #0B3776, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.022
- Twilight Blue #0A437A ΔE 0.035
- Marine #042E60 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.054
- Cobalt #1E488F ΔE 0.066
- Midnight Blue #191970 ΔE 0.073
- Dark Blue Grey #1F3B4D ΔE 0.077
- Light Navy #155084 ΔE 0.077
Use #0B3776 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.