#0B101F
Closest named color: Rich Navy (#001219). oklch(17.7% 0.032 269), rgb(11, 16, 31).
Aa
White text reads best on this color (18.95:1).
About this color
#0B101F is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.032 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.026 away. White text reads best on it, at 18.95:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 18.95:1 |
Values
| HEX | #0B101F |
| RGB | rgb(11, 16, 31) |
| HSL | hsl(225, 48%, 8%) |
| OKLCH | oklch(17.7% 0.032 269) |
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 #0B101F | 18.95:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #0B101F | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #0B101F text on white | 18.95:1 | AAA | Lc 105.4 | Preferred for body text |
| #0B101F text on black | 1.10:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D3D9E8
oklch(88.5% 0.022 268.4)
-
Step 300
300
#B6C0DA
oklch(80.8% 0.038 268.8)
-
Step 400
400
#91A0C8
oklch(70.8% 0.061 268.8)
-
Step 500
500
#7688B9
oklch(63.2% 0.077 268.6)
-
Step 600
600
#5F71A5
oklch(55.6% 0.084 269)
-
Step 700
700
#4E5E8E
oklch(49% 0.08 269.3)
-
Step 800
800
#404D73
oklch(42.6% 0.066 269.1)
-
Step 900
900
#36405D
oklch(37.6% 0.052 269.2)
-
Step 950
950 (this color)
#0B101F
oklch(17.7% 0.032 269)
#0B101F 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) | #0A1120 | 0.004 |
| Deuteranopia (no green cones) | #08101F | 0.005 |
| Tritanopia (no blue cones) | #041316 | 0.028 |
| Achromatopsia (no color) | #111111 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B101F
#0B101F
oklch(17.7% 0.032 269)
- #171001
#171001
oklch(17.7% 0.034 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 #0B101F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.026
- Almost Black #070D0D ΔE 0.039
- Rich Black #0D1B2A ΔE 0.043
- Midnight #03012D ΔE 0.066
- Dark Navy #000435 ΔE 0.066
- Dark Navy Blue #00022E ΔE 0.067
- Very Dark Blue #000133 ΔE 0.072
- Navy Blue #001146 ΔE 0.078
Use #0B101F 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.