#2B0101
Closest named color: Very Dark Brown (#1D0200). oklch(18.4% 0.072 28.3), rgb(43, 1, 1).
Aa
White text reads best on this color (18.96:1).
About this color
#2B0101 is a very dark, moderately saturated red. In OKLCH its lightness is 18%, its chroma 0.072 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.038 away. White text reads best on it, at 18.96:1.
| Hue family | Reds |
| Lightness | very dark (18%) |
| Chroma | moderately saturated (0.072) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.10:1 |
| White text | 18.96:1 |
Values
| HEX | #2B0101 |
| RGB | rgb(43, 1, 1) |
| HSL | hsl(0, 95%, 9%) |
| OKLCH | oklch(18.4% 0.072 28.3) |
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 #2B0101 | 18.96:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #2B0101 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #2B0101 text on white | 18.96:1 | AAA | Lc 104.7 | Preferred for body text |
| #2B0101 text on black | 1.10:1 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FAE4E1
oklch(93.6% 0.025 26.9)
-
Step 200
200
#F7CEC8
oklch(88.5% 0.047 27.8)
-
Step 300
300
#F3ACA2
oklch(80.9% 0.085 28)
-
Step 400
400
#E97D6F
oklch(70.7% 0.136 28.6)
-
Step 500
500
#DF5549
oklch(63% 0.175 28.1)
-
Step 600
600
#CB332A
oklch(55.7% 0.19 28.4)
-
Step 700
700
#AF231D
oklch(49.1% 0.177 28.3)
-
Step 800
800
#8E201A
oklch(42.7% 0.147 28.3)
-
Step 900
900
#72221C
oklch(37.7% 0.114 28.1)
-
Step 950
950 (this color)
#2B0101
oklch(18.4% 0.072 28.3)
#2B0101 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) | #0D0A01 | 0.078 |
| Deuteranopia (no green cones) | #181400 | 0.071 |
| Tritanopia (no blue cones) | #310001 | 0.015 |
| Achromatopsia (no color) | #101010 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B0101
#2B0101
oklch(18.4% 0.072 28.3)
- #00161A
#00161A
oklch(18.3% 0.032 209.8)
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 #2B0101, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.038
- Dark Maroon #3C0008 ΔE 0.047
- Deep Brown #410200 ΔE 0.059
- Mahogany #4A0100 ΔE 0.081
- Dark Brown #341C02 ΔE 0.082
- Almost Black #070D0D ΔE 0.088
- Chocolate Brown #411900 ΔE 0.090
- Dark Plum #3F012C ΔE 0.095
Use #2B0101 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.