#180000
Closest named color: Very Dark Brown (#1D0200). oklch(13.1% 0.054 29.2), rgb(24, 0, 0).
Aa
White text reads best on this color (20.21:1).
About this color
#180000 is a very dark, muted red. In OKLCH its lightness is 13%, its chroma 0.054 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.020 away. White text reads best on it, at 20.21:1.
| Hue family | Reds |
| Lightness | very dark (13%) |
| Chroma | muted (0.054) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.03:1 |
| White text | 20.21:1 |
Values
| HEX | #180000 |
| RGB | rgb(24, 0, 0) |
| HSL | hsl(0, 100%, 5%) |
| OKLCH | oklch(13.1% 0.054 29.2) |
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 #180000 | 20.21:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #180000 | 1.03:1 | Fails | Lc 0.0 | Not readable |
| #180000 text on white | 20.21:1 | AAA | Lc 105.7 | Preferred for body text |
| #180000 text on black | 1.03:1 | 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
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E6E3
oklch(93.7% 0.018 30.3)
-
Step 200
200
#F0D1CC
oklch(88.5% 0.036 28.7)
-
Step 300
300
#E7B2A9
oklch(80.9% 0.064 29.5)
-
Step 400
400
#D9887B
oklch(70.8% 0.102 29.7)
-
Step 500
500
#CC685A
oklch(63.1% 0.13 29.4)
-
Step 600
600
#B84C40
oklch(55.6% 0.143 28.8)
-
Step 700
700
#9E3D32
oklch(49.2% 0.132 29.1)
-
Step 800
800
#80332A
oklch(42.7% 0.109 29.1)
-
Step 900
900
#672D26
oklch(37.6% 0.085 28.8)
-
Step 950
950 (this color)
#180000
oklch(13.1% 0.054 29.2)
#180000 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) | #050300 | 0.057 |
| Deuteranopia (no green cones) | #0B0800 | 0.051 |
| Tritanopia (no blue cones) | #1C0000 | 0.012 |
| Achromatopsia (no color) | #060606 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #180000
#180000
oklch(13.1% 0.054 29.2)
- #000A0C
#000A0C
oklch(13.2% 0.023 206.1)
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 #180000, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.020
- Almost Black #070D0D ΔE 0.067
- Rich Navy #001219 ΔE 0.093
- Dark Maroon #3C0008 ΔE 0.101
- Deep Brown #410200 ΔE 0.114
- Rich Black #0D1B2A ΔE 0.120
- Midnight #03012D ΔE 0.124
- Very Dark Purple #2A0134 ΔE 0.124
Use #180000 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.