#0F180B
Closest named color: Rich Navy (#001219). oklch(19.6% 0.028 136.4), rgb(15, 24, 11).
Aa
White text reads best on this color (18.16:1).
About this color
#0F180B is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.049 away. White text reads best on it, at 18.16:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.16:1 |
Values
| HEX | #0F180B |
| RGB | rgb(15, 24, 11) |
| HSL | hsl(102, 37%, 7%) |
| OKLCH | oklch(19.6% 0.028 136.4) |
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 #0F180B | 18.16:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #0F180B | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #0F180B text on white | 18.16:1 | AAA | Lc 104.8 | Preferred for body text |
| #0F180B 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
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E7EBE5
oklch(93.5% 0.009 134.9)
-
Step 200
200
#D4DCD0
oklch(88.5% 0.018 134.9)
-
Step 300
300
#B7C6B1
oklch(80.9% 0.033 136.7)
-
Step 400
400
#91A988
oklch(70.7% 0.054 137.2)
-
Step 500
500
#76936A
oklch(63% 0.068 136.7)
-
Step 600
600
#5F7E51
oklch(55.7% 0.076 136.3)
-
Step 700
700
#4E6A42
oklch(49.1% 0.07 136.7)
-
Step 800
800
#405637
oklch(42.6% 0.056 136.9)
-
Step 900
900
#37472F
oklch(37.7% 0.045 135.5)
-
Step 950
950 (this color)
#0F180B
oklch(19.6% 0.028 136.4)
#0F180B 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) | #19160A | 0.019 |
| Deuteranopia (no green cones) | #18150C | 0.020 |
| Tritanopia (no blue cones) | #0F1715 | 0.021 |
| Achromatopsia (no color) | #161616 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F180B
#0F180B
oklch(19.6% 0.028 136.4)
- #1A111E
#1A111E
oklch(19.6% 0.029 315.2)
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 #0F180B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.049
- Almost Black #070D0D ΔE 0.050
- Rich Black #0D1B2A ΔE 0.058
- Jet #212529 ΔE 0.074
- Dark Brown #341C02 ΔE 0.078
- Dark #1B2431 ΔE 0.079
- Very Dark Brown #1D0200 ΔE 0.080
- Dark Forest Green #002D04 ΔE 0.083
Use #0F180B 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.