#0B1C51
Closest named color: Navy Blue (#001146). oklch(25.2% 0.1 265.8), rgb(11, 28, 81).
Aa
White text reads best on this color (16.16:1).
About this color
#0B1C51 is a dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.100 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.042 away. White text reads best on it, at 16.16:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.29:1 |
| White text | 16.16:1 |
Values
| HEX | #0B1C51 |
| RGB | rgb(11, 28, 81) |
| HSL | hsl(225, 76%, 18%) |
| OKLCH | oklch(25.2% 0.1 265.8) |
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 #0B1C51 | 16.16:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #0B1C51 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #0B1C51 text on white | 16.16:1 | AAA | Lc 102.8 | Preferred for body text |
| #0B1C51 text on black | 1.29:1 | 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
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#739CFF
oklch(70.7% 0.152 265.7)
-
Step 500
500
#507FFF
oklch(63.1% 0.197 265.8)
-
Step 600
600
#2F5DFF
oklch(55.5% 0.245 265.9)
-
Step 700
700
#1F46E8
oklch(49.1% 0.245 265.8)
-
Step 800
800
#1A3CBB
oklch(42.8% 0.202 265.7)
-
Step 900
900
#193693
oklch(37.7% 0.157 265.7)
-
Step 950
950 (this color)
#0B1C51
oklch(25.2% 0.1 265.8)
#0B1C51 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) | #002453 | 0.023 |
| Deuteranopia (no green cones) | #001E50 | 0.011 |
| Tritanopia (no blue cones) | #002A33 | 0.079 |
| Achromatopsia (no color) | #212121 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1C51
#0B1C51
oklch(25.2% 0.1 265.8)
- #2D2000
#2D2000
oklch(25.2% 0.052 86.4)
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 #0B1C51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.042
- Dark Indigo #1F0954 ΔE 0.047
- Darkblue #030764 ΔE 0.053
- Marine #042E60 ΔE 0.057
- Midnight Blue #191970 ΔE 0.059
- Oxford Blue #1B263B ΔE 0.060
- Dark Royal Blue #02066F ΔE 0.065
- Night Blue #040348 ΔE 0.065
Use #0B1C51 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.