#0B3670
Closest named color: Marine Blue (#01386A). oklch(34.2% 0.11 257.8), rgb(11, 54, 112).
Aa
White text reads best on this color (11.82:1).
About this color
#0B3670 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.110 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.014 away. White text reads best on it, at 11.82:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.77:1 |
| White text | 11.82:1 |
Values
| HEX | #0B3670 |
| RGB | rgb(11, 54, 112) |
| HSL | hsl(214, 82%, 24%) |
| OKLCH | oklch(34.2% 0.11 257.8) |
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 #0B3670 | 11.82:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #0B3670 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #0B3670 text on white | 11.82:1 | AAA | Lc 96.6 | Preferred for body text |
| #0B3670 text on black | 1.77:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF8
oklch(88.6% 0.046 257.6)
-
Step 300
300
#9FC3F6
oklch(80.9% 0.082 257.1)
-
Step 400
400
#6AA2F2
oklch(70.8% 0.132 257.4)
-
Step 500
500
#4088EE
oklch(63.2% 0.17 257.6)
-
Step 600
600
#1C6FDC
oklch(55.7% 0.184 257.6)
-
Step 700
700
#0D5CBF
oklch(49.2% 0.171 257.7)
-
Step 800
800
#104C9A
oklch(42.8% 0.141 257.5)
-
Step 900
900 (this color)
#0B3670
oklch(34.2% 0.11 257.8)
-
Step 950
950
#0E2648
oklch(27% 0.07 257.6)
#0B3670 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) | #123C72 | 0.019 |
| Deuteranopia (no green cones) | #00336F | 0.012 |
| Tritanopia (no blue cones) | #00444D | 0.084 |
| Achromatopsia (no color) | #373737 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B3670
#0B3670
oklch(34.2% 0.11 257.8)
- #4C3300
#4C3300
oklch(34.2% 0.071 78.6)
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 #0B3670, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.014
- Marine #042E60 ΔE 0.037
- Twilight Blue #0A437A ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.068
- Midnight Green #073B4C ΔE 0.069
- Midnight Blue #191970 ΔE 0.071
- Cobalt #1E488F ΔE 0.074
Use #0B3670 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.