#0B184B
Closest named color: Navy Blue (#001146). oklch(23.7% 0.096 267.3), rgb(11, 24, 75).
Aa
White text reads best on this color (16.84:1).
About this color
#0B184B is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.096 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.029 away. White text reads best on it, at 16.84:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.24:1 |
| White text | 16.84:1 |
Values
| HEX | #0B184B |
| RGB | rgb(11, 24, 75) |
| HSL | hsl(228, 74%, 17%) |
| OKLCH | oklch(23.7% 0.096 267.3) |
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 #0B184B | 16.84:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #0B184B | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #0B184B text on white | 16.84:1 | AAA | Lc 103.4 | Preferred for body text |
| #0B184B text on black | 1.24:1 | 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
#E1EAFF
oklch(93.7% 0.03 267.2)
-
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
#779BFF
oklch(70.7% 0.152 267.5)
-
Step 500
500
#557EFF
oklch(63.2% 0.197 267.3)
-
Step 600
600
#375CFF
oklch(55.6% 0.244 267.4)
-
Step 700
700
#2947E3
oklch(49% 0.236 267.3)
-
Step 800
800
#223CB7
oklch(42.6% 0.195 267.4)
-
Step 900
900
#1F3690
oklch(37.7% 0.151 267.4)
-
Step 950
950 (this color)
#0B184B
oklch(23.7% 0.096 267.3)
#0B184B 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) | #00204D | 0.023 |
| Deuteranopia (no green cones) | #001A4A | 0.013 |
| Tritanopia (no blue cones) | #00252E | 0.076 |
| Achromatopsia (no color) | #1D1D1D | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B184B
#0B184B
oklch(23.7% 0.096 267.3)
- #281D00
#281D00
oklch(23.8% 0.049 88.6)
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 #0B184B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.029
- Dark Indigo #1F0954 ΔE 0.044
- Night Blue #040348 ΔE 0.052
- Darkblue #030764 ΔE 0.055
- Oxford Blue #1B263B ΔE 0.063
- Rich Black #0D1B2A ΔE 0.066
- Dark Royal Blue #02066F ΔE 0.070
- Midnight Blue #191970 ΔE 0.071
Use #0B184B 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.