#0B1741
Closest named color: Navy Blue (#001146). oklch(22.5% 0.082 267.3), rgb(11, 23, 65).
Aa
White text reads best on this color (17.31:1).
About this color
#0B1741 is a very dark, moderately saturated blue. In OKLCH its lightness is 22%, its chroma 0.082 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.026 away. White text reads best on it, at 17.31:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.21:1 |
| White text | 17.31:1 |
Values
| HEX | #0B1741 |
| RGB | rgb(11, 23, 65) |
| HSL | hsl(227, 71%, 15%) |
| OKLCH | oklch(22.5% 0.082 267.3) |
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 #0B1741 | 17.31:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #0B1741 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #0B1741 text on white | 17.31:1 | AAA | Lc 103.9 | Preferred for body text |
| #0B1741 text on black | 1.21:1 | 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
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FE
oklch(88.5% 0.054 266.8)
-
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
#557EFF
oklch(63.2% 0.197 267.3)
-
Step 600
600
#3D62EE
oklch(55.5% 0.215 267.4)
-
Step 700
700
#3050CF
oklch(49% 0.199 267.4)
-
Step 800
800
#2843A8
oklch(42.8% 0.165 267.4)
-
Step 900
900
#233A85
oklch(37.7% 0.129 267.1)
-
Step 950
950 (this color)
#0B1741
oklch(22.5% 0.082 267.3)
#0B1741 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) | #001D42 | 0.020 |
| Deuteranopia (no green cones) | #001840 | 0.014 |
| Tritanopia (no blue cones) | #002129 | 0.064 |
| Achromatopsia (no color) | #1B1B1B | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1741
#0B1741
oklch(22.5% 0.082 267.3)
- #251A00
#251A00
oklch(22.5% 0.046 87)
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 #0B1741, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.026
- Rich Black #0D1B2A ΔE 0.049
- Night Blue #040348 ΔE 0.051
- Dark Indigo #1F0954 ΔE 0.054
- Oxford Blue #1B263B ΔE 0.059
- Dark #1B2431 ΔE 0.064
- Dark Navy #000435 ΔE 0.067
- Darkblue #030764 ΔE 0.070
Use #0B1741 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.