#1B0300
Closest named color: Very Dark Brown (#1D0200). oklch(14.9% 0.049 38), rgb(27, 3, 0).
Aa
White text reads best on this color (19.81:1).
About this color
#1B0300 is a very dark, muted red. In OKLCH its lightness is 15%, its chroma 0.049 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.006 away. White text reads best on it, at 19.81:1.
| Hue family | Reds |
| Lightness | very dark (15%) |
| Chroma | muted (0.049) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.05:1 |
| White text | 19.81:1 |
Values
| HEX | #1B0300 |
| RGB | rgb(27, 3, 0) |
| HSL | hsl(7, 100%, 5%) |
| OKLCH | oklch(14.9% 0.049 38) |
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 #1B0300 | 19.81:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #1B0300 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #1B0300 text on white | 19.81:1 | AAA | Lc 105.6 | Preferred for body text |
| #1B0300 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
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F5E6E2
oklch(93.6% 0.017 35.3)
-
Step 200
200
#EDD2CA
oklch(88.4% 0.032 37.1)
-
Step 300
300
#E3B4A6
oklch(80.8% 0.058 37.2)
-
Step 400
400
#D38C76
oklch(70.7% 0.093 38)
-
Step 500
500
#C66E53
oklch(63.2% 0.119 37.8)
-
Step 600
600
#B15437
oklch(55.6% 0.129 37.9)
-
Step 700
700
#984429
oklch(49.1% 0.12 38.2)
-
Step 800
800
#7B3823
oklch(42.6% 0.099 38)
-
Step 900
900
#643122
oklch(37.7% 0.078 37.2)
-
Step 950
950 (this color)
#1B0300
oklch(14.9% 0.049 38)
#1B0300 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) | #090600 | 0.048 |
| Deuteranopia (no green cones) | #0F0C00 | 0.045 |
| Tritanopia (no blue cones) | #1F0002 | 0.019 |
| Achromatopsia (no color) | #0A0A0A | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B0300
#1B0300
oklch(14.9% 0.049 38)
- #000E12
#000E12
oklch(15.1% 0.026 213.8)
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 #1B0300, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.006
- Almost Black #070D0D ΔE 0.058
- Rich Navy #001219 ΔE 0.083
- Dark Maroon #3C0008 ΔE 0.089
- Deep Brown #410200 ΔE 0.100
- Rich Black #0D1B2A ΔE 0.106
- Dark Brown #341C02 ΔE 0.107
- Very Dark Purple #2A0134 ΔE 0.118
Use #1B0300 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.