#18040B
Closest named color: Very Dark Brown (#1D0200). oklch(15% 0.041 358.4), rgb(24, 4, 11).
Aa
White text reads best on this color (19.79:1).
About this color
#18040B is a very dark, muted red. In OKLCH its lightness is 15%, its chroma 0.041 and its hue 358°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.032 away. White text reads best on it, at 19.79:1.
| Hue family | Reds |
| Lightness | very dark (15%) |
| Chroma | muted (0.041) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.06:1 |
| White text | 19.79:1 |
Values
| HEX | #18040B |
| RGB | rgb(24, 4, 11) |
| HSL | hsl(339, 71%, 5%) |
| OKLCH | oklch(15% 0.041 358.4) |
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 #18040B | 19.79:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #18040B | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #18040B text on white | 19.79:1 | AAA | Lc 105.7 | Preferred for body text |
| #18040B text on black | 1.06:1 | 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
#F9F4F5
oklch(97.1% 0.006 3.3)
-
Step 100
100
#F2E6EA
oklch(93.6% 0.014 355)
-
Step 200
200
#E9D2D9
oklch(88.5% 0.027 357.3)
-
Step 300
300
#DCB4C0
oklch(80.9% 0.049 358.3)
-
Step 400
400
#C98DA0
oklch(70.8% 0.077 358.6)
-
Step 500
500
#B96F89
oklch(63% 0.099 357.8)
-
Step 600
600
#A45773
oklch(55.6% 0.106 358)
-
Step 700
700
#8D4760
oklch(49.2% 0.099 358.7)
-
Step 800
800
#723A4E
oklch(42.6% 0.082 358.5)
-
Step 900
900
#5D3241
oklch(37.7% 0.065 358.4)
-
Step 950
950 (this color)
#18040B
oklch(15% 0.041 358.4)
#18040B 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) | #07080B | 0.044 |
| Deuteranopia (no green cones) | #0C0C0A | 0.042 |
| Tritanopia (no blue cones) | #1B0306 | 0.013 |
| Achromatopsia (no color) | #0A0A0A | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18040B
#18040B
oklch(15% 0.041 358.4)
- #000F0B
#000F0B
oklch(15.1% 0.028 177)
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 #18040B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.032
- Almost Black #070D0D ΔE 0.050
- Rich Navy #001219 ΔE 0.069
- Rich Black #0D1B2A ΔE 0.091
- Dark Maroon #3C0008 ΔE 0.093
- Very Dark Purple #2A0134 ΔE 0.094
- Midnight #03012D ΔE 0.096
- Midnight Purple #280137 ΔE 0.097
Use #18040B 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.