#180004
Closest named color: Very Dark Brown (#1D0200). oklch(13.4% 0.053 10.5), rgb(24, 0, 4).
Aa
White text reads best on this color (20.18:1).
About this color
#180004 is a very dark, muted red. In OKLCH its lightness is 13%, its chroma 0.053 and its hue 11°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.028 away. White text reads best on it, at 20.18:1.
| Hue family | Reds |
| Lightness | very dark (13%) |
| Chroma | muted (0.053) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.04:1 |
| White text | 20.18:1 |
Values
| HEX | #180004 |
| RGB | rgb(24, 0, 4) |
| HSL | hsl(350, 100%, 5%) |
| OKLCH | oklch(13.4% 0.053 10.5) |
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 #180004 | 20.18:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #180004 | 1.04:1 | Fails | Lc 0.0 | Not readable |
| #180004 text on white | 20.18:1 | AAA | Lc 105.7 | Preferred for body text |
| #180004 text on black | 1.04:1 | 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
#FBF3F4
oklch(97.1% 0.009 8.5)
-
Step 100
100
#F6E5E7
oklch(93.6% 0.019 9.3)
-
Step 200
200
#EFD0D3
oklch(88.4% 0.035 11.2)
-
Step 300
300
#E6B0B7
oklch(80.8% 0.064 9.9)
-
Step 400
400
#D78691
oklch(70.7% 0.1 11.1)
-
Step 500
500
#CA6577
oklch(63.1% 0.129 10.3)
-
Step 600
600
#B54A5F
oklch(55.5% 0.14 10.8)
-
Step 700
700
#9C3A4F
oklch(49.1% 0.131 10.3)
-
Step 800
800
#7F3141
oklch(42.8% 0.109 10.3)
-
Step 900
900
#662C37
oklch(37.7% 0.084 10.2)
-
Step 950
950 (this color)
#180004
oklch(13.4% 0.053 10.5)
#180004 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) | #040404 | 0.060 |
| Deuteranopia (no green cones) | #0A0904 | 0.055 |
| Tritanopia (no blue cones) | #1B0001 | 0.015 |
| Achromatopsia (no color) | #070707 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #180004
#180004
oklch(13.4% 0.053 10.5)
- #000B0A
#000B0A
oklch(13.5% 0.023 189.3)
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 #180004, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.028
- Almost Black #070D0D ΔE 0.066
- Rich Navy #001219 ΔE 0.089
- Dark Maroon #3C0008 ΔE 0.100
- Very Dark Purple #2A0134 ΔE 0.109
- Midnight #03012D ΔE 0.111
- Midnight Purple #280137 ΔE 0.113
- Rich Black #0D1B2A ΔE 0.114
Use #180004 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.