#210D10
Closest named color: Very Dark Brown (#1D0200). oklch(19.1% 0.034 11.3), rgb(33, 13, 16).
Aa
White text reads best on this color (18.58:1).
About this color
#210D10 is a very dark, muted red. In OKLCH its lightness is 19%, its chroma 0.034 and its hue 11°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.047 away. White text reads best on it, at 18.58:1.
| Hue family | Reds |
| Lightness | very dark (19%) |
| Chroma | muted (0.034) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.12:1 |
| White text | 18.58:1 |
Values
| HEX | #210D10 |
| RGB | rgb(33, 13, 16) |
| HSL | hsl(351, 43%, 9%) |
| OKLCH | oklch(19.1% 0.034 11.3) |
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 #210D10 | 18.58:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #210D10 | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #210D10 text on white | 18.58:1 | AAA | Lc 105.1 | Preferred for body text |
| #210D10 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
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F2E7E8
oklch(93.7% 0.012 11)
-
Step 200
200
#E8D3D5
oklch(88.5% 0.023 11)
-
Step 300
300
#D9B6BA
oklch(80.8% 0.041 10.3)
-
Step 400
400
#C69096
oklch(70.7% 0.066 11.5)
-
Step 500
500
#B6747D
oklch(63.1% 0.084 10.9)
-
Step 600
600
#A15C66
oklch(55.6% 0.091 11.1)
-
Step 700
700
#894B54
oklch(49% 0.084 11.4)
-
Step 800
800
#703E45
oklch(42.7% 0.07 11.5)
-
Step 900
900
#5B353A
oklch(37.7% 0.055 11.5)
-
Step 950
950 (this color)
#210D10
oklch(19.1% 0.034 11.3)
#210D10 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) | #111110 | 0.037 |
| Deuteranopia (no green cones) | #161410 | 0.033 |
| Tritanopia (no blue cones) | #240B0E | 0.009 |
| Achromatopsia (no color) | #131313 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #210D10
#210D10
oklch(19.1% 0.034 11.3)
- #001918
#001918
oklch(19.3% 0.033 191.3)
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 #210D10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.047
- Almost Black #070D0D ΔE 0.059
- Rich Black #0D1B2A ΔE 0.066
- Dark Maroon #3C0008 ΔE 0.066
- Rich Navy #001219 ΔE 0.067
- Dark Brown #341C02 ΔE 0.076
- Deep Brown #410200 ΔE 0.079
- Jet #212529 ΔE 0.082
Use #210D10 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.