#21010E
Closest named color: Very Dark Brown (#1D0200). oklch(16.4% 0.063 357.9), rgb(33, 1, 14).
Aa
White text reads best on this color (19.52:1).
About this color
#21010E is a very dark, muted red. In OKLCH its lightness is 16%, its chroma 0.063 and its hue 358°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.039 away. White text reads best on it, at 19.52:1.
| Hue family | Reds |
| Lightness | very dark (16%) |
| Chroma | muted (0.063) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.07:1 |
| White text | 19.52:1 |
Values
| HEX | #21010E |
| RGB | rgb(33, 1, 14) |
| HSL | hsl(336, 94%, 7%) |
| OKLCH | oklch(16.4% 0.063 357.9) |
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 #21010E | 19.52:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #21010E | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #21010E text on white | 19.52:1 | AAA | Lc 105.3 | Preferred for body text |
| #21010E text on black | 1.07:1 | 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
#FCF3F5
oklch(97.2% 0.01 2)
-
Step 100
100
#F7E4EA
oklch(93.6% 0.022 356.3)
-
Step 200
200
#F1CED9
oklch(88.4% 0.042 357.1)
-
Step 300
300
#E9ADC0
oklch(80.9% 0.074 358.1)
-
Step 400
400
#DB80A0
oklch(70.7% 0.118 358)
-
Step 500
500
#CF5D89
oklch(63.1% 0.151 358.1)
-
Step 600
600
#BA3F73
oklch(55.6% 0.165 357.9)
-
Step 700
700
#A03060
oklch(49.1% 0.153 358.1)
-
Step 800
800
#82294F
oklch(42.7% 0.127 357.7)
-
Step 900
900
#692741
oklch(37.7% 0.099 358.4)
-
Step 950
950 (this color)
#21010E
oklch(16.4% 0.063 357.9)
#21010E 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) | #06080E | 0.070 |
| Deuteranopia (no green cones) | #0F0F0D | 0.064 |
| Tritanopia (no blue cones) | #250005 | 0.022 |
| Achromatopsia (no color) | #0C0C0C | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21010E
#21010E
oklch(16.4% 0.063 357.9)
- #00120E
#00120E
oklch(16.3% 0.03 178.5)
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 #21010E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.039
- Almost Black #070D0D ΔE 0.073
- Dark Maroon #3C0008 ΔE 0.074
- Very Dark Purple #2A0134 ΔE 0.079
- Midnight Purple #280137 ΔE 0.084
- Rich Navy #001219 ΔE 0.088
- Deep Brown #410200 ΔE 0.092
- Dark Plum #3F012C ΔE 0.094
Use #21010E 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.