#0B171A
Closest named color: Rich Navy (#001219). oklch(19.5% 0.018 215.3), rgb(11, 23, 26).
Aa
White text reads best on this color (18.23:1).
About this color
#0B171A is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.029 away. White text reads best on it, at 18.23:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.23:1 |
Values
| HEX | #0B171A |
| RGB | rgb(11, 23, 26) |
| HSL | hsl(192, 41%, 7%) |
| OKLCH | oklch(19.5% 0.018 215.3) |
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 #0B171A | 18.23:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #0B171A | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #0B171A text on white | 18.23:1 | AAA | Lc 104.9 | Preferred for body text |
| #0B171A text on black | 1.15:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D1DBDE
oklch(88.5% 0.012 217.6)
-
Step 300
300
#B2C4C9
oklch(80.8% 0.021 216.2)
-
Step 400
400
#89A6AE
oklch(70.6% 0.034 216.3)
-
Step 500
500
#6B919A
oklch(63.2% 0.044 213.9)
-
Step 600
600
#527B85
oklch(55.6% 0.048 214.7)
-
Step 700
700
#436771
oklch(49% 0.044 217.1)
-
Step 800
800
#37545C
oklch(42.6% 0.037 216.9)
-
Step 900
900
#30464B
oklch(37.8% 0.029 213.3)
-
Step 950
950 (this color)
#0B171A
oklch(19.5% 0.018 215.3)
#0B171A 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) | #15161A | 0.017 |
| Deuteranopia (no green cones) | #12141A | 0.015 |
| Tritanopia (no blue cones) | #061818 | 0.010 |
| Achromatopsia (no color) | #151515 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B171A
#0B171A
oklch(19.5% 0.018 215.3)
- #1C120F
#1C120F
oklch(19.4% 0.018 37.4)
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 #0B171A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.029
- Rich Black #0D1B2A ΔE 0.033
- Almost Black #070D0D ΔE 0.043
- Dark #1B2431 ΔE 0.066
- Jet #212529 ΔE 0.068
- Oxford Blue #1B263B ΔE 0.081
- Very Dark Brown #1D0200 ΔE 0.084
- Dark Navy #000435 ΔE 0.092
Use #0B171A 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.