#0B101D
Closest named color: Rich Navy (#001219). oklch(17.5% 0.028 267.4), rgb(11, 16, 29).
Aa
White text reads best on this color (18.98:1).
About this color
#0B101D is a very dark close to neutral grey. In OKLCH its lightness is 18%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.024 away. White text reads best on it, at 18.98:1.
| Hue family | Neutrals |
| Lightness | very dark (18%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 18.98:1 |
Values
| HEX | #0B101D |
| RGB | rgb(11, 16, 29) |
| HSL | hsl(223, 45%, 8%) |
| OKLCH | oklch(17.5% 0.028 267.4) |
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 #0B101D | 18.98:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #0B101D | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #0B101D text on white | 18.98:1 | AAA | Lc 105.4 | Preferred for body text |
| #0B101D 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B7C0D7
oklch(80.8% 0.034 268.6)
-
Step 400
400
#92A0C3
oklch(70.7% 0.054 267.9)
-
Step 500
500
#7788B4
oklch(63% 0.07 268)
-
Step 600
600
#60729F
oklch(55.6% 0.074 267.2)
-
Step 700
700
#4F5F88
oklch(49% 0.069 267.5)
-
Step 800
800
#414E6F
oklch(42.7% 0.058 267.4)
-
Step 900
900
#37415A
oklch(37.7% 0.045 267.4)
-
Step 950
950 (this color)
#0B101D
oklch(17.5% 0.028 267.4)
#0B101D 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) | #0B111E | 0.004 |
| Deuteranopia (no green cones) | #0A101D | 0.002 |
| Tritanopia (no blue cones) | #051315 | 0.026 |
| Achromatopsia (no color) | #101010 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B101D
#0B101D
oklch(17.5% 0.028 267.4)
- #161003
#161003
oklch(17.7% 0.028 87.9)
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 #0B101D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.024
- Almost Black #070D0D ΔE 0.035
- Rich Black #0D1B2A ΔE 0.044
- Midnight #03012D ΔE 0.068
- Dark Navy #000435 ΔE 0.069
- Dark Navy Blue #00022E ΔE 0.069
- Very Dark Blue #000133 ΔE 0.075
- Very Dark Brown #1D0200 ΔE 0.078
Use #0B101D 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.