#0B1027
Closest named color: Rich Navy (#001219). oklch(18.3% 0.047 271.7), rgb(11, 16, 39).
Aa
White text reads best on this color (18.78:1).
About this color
#0B1027 is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.047 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.038 away. White text reads best on it, at 18.78:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.78:1 |
Values
| HEX | #0B1027 |
| RGB | rgb(11, 16, 39) |
| HSL | hsl(229, 56%, 10%) |
| OKLCH | oklch(18.3% 0.047 271.7) |
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 #0B1027 | 18.78:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #0B1027 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #0B1027 text on white | 18.78:1 | AAA | Lc 105.2 | Preferred for body text |
| #0B1027 text on black | 1.11:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D1D8EE
oklch(88.4% 0.031 271.7)
-
Step 300
300
#B3BFE6
oklch(80.8% 0.057 271.7)
-
Step 400
400
#8C9DD9
oklch(70.6% 0.09 271.8)
-
Step 500
500
#7184CF
oklch(63.1% 0.115 272)
-
Step 600
600
#5A6DBC
oklch(55.7% 0.124 271.6)
-
Step 700
700
#4A5AA2
oklch(49% 0.117 272)
-
Step 800
800
#3D4A83
oklch(42.7% 0.096 272.1)
-
Step 900
900
#343E69
oklch(37.6% 0.075 272.4)
-
Step 950
950 (this color)
#0B1027
oklch(18.3% 0.047 271.7)
#0B1027 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) | #061328 | 0.012 |
| Deuteranopia (no green cones) | #041027 | 0.012 |
| Tritanopia (no blue cones) | #011519 | 0.042 |
| Achromatopsia (no color) | #121212 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1027
#0B1027
oklch(18.3% 0.047 271.7)
- #181100
#181100
oklch(18.1% 0.037 91.1)
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 #0B1027, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.038
- Rich Black #0D1B2A ΔE 0.040
- Dark Navy #000435 ΔE 0.054
- Almost Black #070D0D ΔE 0.055
- Midnight #03012D ΔE 0.057
- Dark Navy Blue #00022E ΔE 0.059
- Navy Blue #001146 ΔE 0.062
- Very Dark Blue #000133 ΔE 0.062
Use #0B1027 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.