#0D181C
Closest named color: Rich Black (#0D1B2A). oklch(20% 0.018 222.7), rgb(13, 24, 28).
Aa
White text reads best on this color (18.03:1).
About this color
#0D181C is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.028 away. White text reads best on it, at 18.03:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.03:1 |
Values
| HEX | #0D181C |
| RGB | rgb(13, 24, 28) |
| HSL | hsl(196, 37%, 8%) |
| OKLCH | oklch(20% 0.018 222.7) |
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 #0D181C | 18.03:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #0D181C | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #0D181C text on white | 18.03:1 | AAA | Lc 104.7 | Preferred for body text |
| #0D181C text on black | 1.16:1 | 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
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D1DBDF
oklch(88.5% 0.012 223.5)
-
Step 300
300
#B3C4CB
oklch(80.9% 0.021 224.4)
-
Step 400
400
#8BA6B0
oklch(70.8% 0.033 222.3)
-
Step 500
500
#6D909D
oklch(63.2% 0.044 222.7)
-
Step 600
600
#557A87
oklch(55.7% 0.046 221.8)
-
Step 700
700
#456673
oklch(49% 0.043 224.5)
-
Step 800
800
#39545D
oklch(42.8% 0.036 220.7)
-
Step 900
900
#31454C
oklch(37.6% 0.028 221.5)
-
Step 950
950 (this color)
#0D181C
oklch(20% 0.018 222.7)
#0D181C 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) | #16171C | 0.015 |
| Deuteranopia (no green cones) | #13161C | 0.012 |
| Tritanopia (no blue cones) | #071919 | 0.012 |
| Achromatopsia (no color) | #161616 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D181C
#0D181C
oklch(20% 0.018 222.7)
- #1D1410
#1D1410
oklch(20.1% 0.017 45.1)
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 #0D181C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.028
- Rich Navy #001219 ΔE 0.034
- Almost Black #070D0D ΔE 0.049
- Dark #1B2431 ΔE 0.060
- Jet #212529 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.075
- Very Dark Brown #1D0200 ΔE 0.087
- Dark Brown #341C02 ΔE 0.089
Use #0D181C 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.