#0B123B
Closest named color: Navy Blue (#001146). oklch(20.7% 0.079 270.4), rgb(11, 18, 59).
Aa
White text reads best on this color (18.04:1).
About this color
#0B123B is a very dark, moderately saturated blue. In OKLCH its lightness is 21%, its chroma 0.079 and its hue 270°. 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 18.04:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.16:1 |
| White text | 18.04:1 |
Values
| HEX | #0B123B |
| RGB | rgb(11, 18, 59) |
| HSL | hsl(231, 69%, 14%) |
| OKLCH | oklch(20.7% 0.079 270.4) |
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 #0B123B | 18.04:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #0B123B | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #0B123B text on white | 18.04:1 | AAA | Lc 104.5 | Preferred for body text |
| #0B123B text on black | 1.16:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CCD8FD
oklch(88.5% 0.053 271.1)
-
Step 300
300
#A9BEFE
oklch(80.9% 0.094 270.2)
-
Step 400
400
#7D99FE
oklch(70.6% 0.151 270.5)
-
Step 500
500
#5F7CFC
oklch(63.1% 0.192 270.4)
-
Step 600
600
#4961EB
oklch(55.6% 0.209 270.5)
-
Step 700
700
#3B4FCC
oklch(49.1% 0.193 270.5)
-
Step 800
800
#3042A5
oklch(42.7% 0.16 270.3)
-
Step 900
900
#2A3983
oklch(37.7% 0.125 270.6)
-
Step 950
950 (this color)
#0B123B
oklch(20.7% 0.079 270.4)
#0B123B 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) | #00193C | 0.023 |
| Deuteranopia (no green cones) | #00143A | 0.016 |
| Tritanopia (no blue cones) | #001C24 | 0.063 |
| Achromatopsia (no color) | #161616 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B123B
#0B123B
oklch(20.7% 0.079 270.4)
- #1F1600
#1F1600
oklch(20.6% 0.042 89.1)
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 #0B123B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.026
- Night Blue #040348 ΔE 0.044
- Rich Black #0D1B2A ΔE 0.048
- Dark Navy #000435 ΔE 0.051
- Dark Indigo #1F0954 ΔE 0.059
- Very Dark Blue #000133 ΔE 0.063
- Midnight #03012D ΔE 0.065
- Dark Navy Blue #00022E ΔE 0.066
Use #0B123B 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.