#1D0000
Closest named color: Very Dark Brown (#1D0200). oklch(14.5% 0.059 29.2), rgb(29, 0, 0).
Aa
White text reads best on this color (19.95:1).
About this color
#1D0000 is a very dark, muted red. In OKLCH its lightness is 14%, its chroma 0.059 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.010 away. White text reads best on it, at 19.95:1.
| Hue family | Reds |
| Lightness | very dark (14%) |
| Chroma | muted (0.059) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.05:1 |
| White text | 19.95:1 |
Values
| HEX | #1D0000 |
| RGB | rgb(29, 0, 0) |
| HSL | hsl(0, 100%, 6%) |
| OKLCH | oklch(14.5% 0.059 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 #1D0000 | 19.95:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #1D0000 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #1D0000 text on white | 19.95:1 | AAA | Lc 105.5 | Preferred for body text |
| #1D0000 text on black | 1.05:1 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F7E5E2
oklch(93.5% 0.02 28.9)
-
Step 200
200
#F2D0CA
oklch(88.5% 0.039 29.7)
-
Step 300
300
#EBB0A6
oklch(80.9% 0.071 29.6)
-
Step 400
400
#DE8577
oklch(70.8% 0.112 29.7)
-
Step 500
500
#D26354
oklch(63.1% 0.143 29.5)
-
Step 600
600
#BE4639
oklch(55.7% 0.157 29.2)
-
Step 700
700
#A3372B
oklch(49.1% 0.145 29.5)
-
Step 800
800
#842E25
oklch(42.6% 0.12 29)
-
Step 900
900
#6B2A23
oklch(37.7% 0.095 28.5)
-
Step 950
950 (this color)
#1D0000
oklch(14.5% 0.059 29.2)
#1D0000 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) | #060500 | 0.066 |
| Deuteranopia (no green cones) | #0E0B00 | 0.057 |
| Tritanopia (no blue cones) | #210000 | 0.012 |
| Achromatopsia (no color) | #090909 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D0000
#1D0000
oklch(14.5% 0.059 29.2)
- #000D10
#000D10
oklch(14.6% 0.025 209.8)
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 #1D0000, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.010
- Almost Black #070D0D ΔE 0.070
- Dark Maroon #3C0008 ΔE 0.087
- Rich Navy #001219 ΔE 0.093
- Deep Brown #410200 ΔE 0.100
- Dark Brown #341C02 ΔE 0.114
- Rich Black #0D1B2A ΔE 0.115
- Very Dark Purple #2A0134 ΔE 0.117
Use #1D0000 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.