#21100A
Closest named color: Very Dark Brown (#1D0200). oklch(19.6% 0.031 40.1), rgb(33, 16, 10).
Aa
White text reads best on this color (18.37:1).
About this color
#21100A is a very dark, muted brown. In OKLCH its lightness is 20%, its chroma 0.031 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.050 away. White text reads best on it, at 18.37:1.
| Hue family | Browns |
| Lightness | very dark (20%) |
| Chroma | muted (0.031) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.14:1 |
| White text | 18.37:1 |
Values
| HEX | #21100A |
| RGB | rgb(33, 16, 10) |
| HSL | hsl(16, 53%, 8%) |
| OKLCH | oklch(19.6% 0.031 40.1) |
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 #21100A | 18.37:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #21100A | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #21100A text on white | 18.37:1 | AAA | Lc 104.9 | Preferred for body text |
| #21100A text on black | 1.14:1 | 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F1E8E4
oklch(93.7% 0.011 45.7)
-
Step 200
200
#E6D5CF
oklch(88.5% 0.021 40.5)
-
Step 300
300
#D7B9AF
oklch(80.9% 0.037 39.3)
-
Step 400
400
#C29585
oklch(70.8% 0.059 40.5)
-
Step 500
500
#B17A67
oklch(63.1% 0.075 39.8)
-
Step 600
600
#9C624E
oklch(55.5% 0.082 39.8)
-
Step 700
700
#86513F
oklch(49.1% 0.077 39.5)
-
Step 800
800
#6D4334
oklch(42.8% 0.063 40.4)
-
Step 900
900
#58392D
oklch(37.8% 0.049 42)
-
Step 950
950 (this color)
#21100A
oklch(19.6% 0.031 40.1)
#21100A 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) | #14120A | 0.029 |
| Deuteranopia (no green cones) | #18160A | 0.028 |
| Tritanopia (no blue cones) | #250D0E | 0.016 |
| Achromatopsia (no color) | #141414 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21100A
#21100A
oklch(19.6% 0.031 40.1)
- #03181F
#03181F
oklch(19.5% 0.031 222)
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 #21100A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.050
- Almost Black #070D0D ΔE 0.059
- Dark Brown #341C02 ΔE 0.065
- Rich Black #0D1B2A ΔE 0.068
- Rich Navy #001219 ΔE 0.068
- Dark Maroon #3C0008 ΔE 0.069
- Deep Brown #410200 ΔE 0.077
- Jet #212529 ΔE 0.077
Use #21100A 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.