#210B11
Closest named color: Very Dark Brown (#1D0200). oklch(18.7% 0.039 4.3), rgb(33, 11, 17).
Aa
White text reads best on this color (18.73:1).
About this color
#210B11 is a very dark, muted red. In OKLCH its lightness is 19%, its chroma 0.039 and its hue 4°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.046 away. White text reads best on it, at 18.73:1.
| Hue family | Reds |
| Lightness | very dark (19%) |
| Chroma | muted (0.039) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.12:1 |
| White text | 18.73:1 |
Values
| HEX | #210B11 |
| RGB | rgb(33, 11, 17) |
| HSL | hsl(344, 50%, 9%) |
| OKLCH | oklch(18.7% 0.039 4.3) |
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 #210B11 | 18.73:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #210B11 | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #210B11 text on white | 18.73:1 | AAA | Lc 105.1 | Preferred for body text |
| #210B11 text on black | 1.12:1 | 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
#F9F4F5
oklch(97.1% 0.006 3.3)
-
Step 100
100
#F2E6E9
oklch(93.5% 0.014 0.3)
-
Step 200
200
#E9D3D7
oklch(88.6% 0.025 5.2)
-
Step 300
300
#DCB5BD
oklch(81% 0.046 4.4)
-
Step 400
400
#C88E9B
oklch(70.7% 0.072 4.3)
-
Step 500
500
#B97183
oklch(63.1% 0.093 3.9)
-
Step 600
600
#A4586C
oklch(55.5% 0.102 4.1)
-
Step 700
700
#8C485A
oklch(49% 0.094 4.3)
-
Step 800
800
#723B4A
oklch(42.6% 0.079 3.6)
-
Step 900
900
#5D333E
oklch(37.7% 0.062 3.6)
-
Step 950
950 (this color)
#210B11
oklch(18.7% 0.039 4.3)
#210B11 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) | #0F0F11 | 0.042 |
| Deuteranopia (no green cones) | #141411 | 0.040 |
| Tritanopia (no blue cones) | #24090D | 0.010 |
| Achromatopsia (no color) | #121212 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #210B11
#210B11
oklch(18.7% 0.039 4.3)
- #001815
#001815
oklch(18.8% 0.033 184.2)
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 #210B11, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.046
- Almost Black #070D0D ΔE 0.060
- Dark Maroon #3C0008 ΔE 0.067
- Rich Navy #001219 ΔE 0.069
- Rich Black #0D1B2A ΔE 0.069
- Very Dark Purple #2A0134 ΔE 0.080
- Deep Brown #410200 ΔE 0.080
- Dark Brown #341C02 ΔE 0.082
Use #210B11 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.