#0B1845
Closest named color: Navy Blue (#001146). oklch(23.1% 0.087 267), rgb(11, 24, 69).
Aa
White text reads best on this color (17.06:1).
About this color
#0B1845 is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.087 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.027 away. White text reads best on it, at 17.06:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.23:1 |
| White text | 17.06:1 |
Values
| HEX | #0B1845 |
| RGB | rgb(11, 24, 69) |
| HSL | hsl(227, 72%, 16%) |
| OKLCH | oklch(23.1% 0.087 267) |
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 #0B1845 | 17.06:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #0B1845 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #0B1845 text on white | 17.06:1 | AAA | Lc 103.7 | Preferred for body text |
| #0B1845 text on black | 1.23:1 | 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 950.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#769BFF
oklch(70.7% 0.152 267.2)
-
Step 500
500
#547EFF
oklch(63.1% 0.197 267)
-
Step 600
600
#3860F6
oklch(55.6% 0.228 266.9)
-
Step 700
700
#2C4ED6
oklch(49.1% 0.211 266.9)
-
Step 800
800
#2541AD
oklch(42.7% 0.175 267.1)
-
Step 900
900
#213989
oklch(37.7% 0.137 266.9)
-
Step 950
950 (this color)
#0B1845
oklch(23.1% 0.087 267)
#0B1845 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) | #001F47 | 0.022 |
| Deuteranopia (no green cones) | #001944 | 0.013 |
| Tritanopia (no blue cones) | #00232B | 0.068 |
| Achromatopsia (no color) | #1C1C1C | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1845
#0B1845
oklch(23.1% 0.087 267)
- #271B00
#271B00
oklch(23.1% 0.047 85.6)
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 #0B1845, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.027
- Dark Indigo #1F0954 ΔE 0.050
- Night Blue #040348 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.055
- Oxford Blue #1B263B ΔE 0.058
- Darkblue #030764 ΔE 0.065
- Dark #1B2431 ΔE 0.065
- Dark Navy #000435 ΔE 0.072
Use #0B1845 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.