#21100E
Closest named color: Very Dark Brown (#1D0200). oklch(19.7% 0.029 27.2), rgb(33, 16, 14).
Aa
White text reads best on this color (18.33:1).
About this color
#21100E is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.052 away. White text reads best on it, at 18.33:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.14:1 |
| White text | 18.33:1 |
Values
| HEX | #21100E |
| RGB | rgb(33, 16, 14) |
| HSL | hsl(6, 40%, 9%) |
| OKLCH | oklch(19.7% 0.029 27.2) |
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 #21100E | 18.33:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #21100E | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #21100E text on white | 18.33:1 | AAA | Lc 104.9 | Preferred for body text |
| #21100E 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
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#F0E7E6
oklch(93.5% 0.01 25.1)
-
Step 200
200
#E6D5D2
oklch(88.6% 0.019 29.6)
-
Step 300
300
#D6B9B5
oklch(81% 0.034 27.2)
-
Step 400
400
#C1948E
oklch(70.7% 0.055 27.2)
-
Step 500
500
#B07972
oklch(63% 0.07 27.3)
-
Step 600
600
#9C615A
oklch(55.6% 0.078 27.2)
-
Step 700
700
#85504A
oklch(49% 0.073 27)
-
Step 800
800
#6C423D
oklch(42.7% 0.06 27.2)
-
Step 900
900
#583834
oklch(37.7% 0.047 27.3)
-
Step 950
950 (this color)
#21100E
oklch(19.7% 0.029 27.2)
#21100E 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) | #14120E | 0.029 |
| Deuteranopia (no green cones) | #18160E | 0.028 |
| Tritanopia (no blue cones) | #240E10 | 0.011 |
| Achromatopsia (no color) | #151515 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21100E
#21100E
oklch(19.7% 0.029 27.2)
- #03191C
#03191C
oklch(19.7% 0.029 206.9)
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 #21100E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.052
- Almost Black #070D0D ΔE 0.059
- Rich Black #0D1B2A ΔE 0.064
- Rich Navy #001219 ΔE 0.066
- Dark Brown #341C02 ΔE 0.067
- Dark Maroon #3C0008 ΔE 0.068
- Jet #212529 ΔE 0.075
- Deep Brown #410200 ΔE 0.077
Use #21100E 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.