#21010C
Closest named color: Very Dark Brown (#1D0200). oklch(16.3% 0.062 1.6), rgb(33, 1, 12).
Aa
White text reads best on this color (19.54:1).
About this color
#21010C is a very dark, muted red. In OKLCH its lightness is 16%, its chroma 0.062 and its hue 2°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.035 away. White text reads best on it, at 19.54:1.
| Hue family | Reds |
| Lightness | very dark (16%) |
| Chroma | muted (0.062) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.07:1 |
| White text | 19.54:1 |
Values
| HEX | #21010C |
| RGB | rgb(33, 1, 12) |
| HSL | hsl(339, 94%, 7%) |
| OKLCH | oklch(16.3% 0.062 1.6) |
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 #21010C | 19.54:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #21010C | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #21010C text on white | 19.54:1 | AAA | Lc 105.3 | Preferred for body text |
| #21010C 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
#F7E4E9
oklch(93.5% 0.022 359.7)
-
Step 200
200
#F1CFD7
oklch(88.5% 0.039 2)
-
Step 300
300
#EAADBD
oklch(80.9% 0.074 1.6)
-
Step 400
400
#DC809B
oklch(70.6% 0.117 1.7)
-
Step 500
500
#D05D83
oklch(63.1% 0.15 1.6)
-
Step 600
600
#BB406D
oklch(55.6% 0.162 1.4)
-
Step 700
700
#A1315B
oklch(49.2% 0.151 1.5)
-
Step 800
800
#832A4A
oklch(42.8% 0.125 1.8)
-
Step 900
900
#69273E
oklch(37.6% 0.098 1.2)
-
Step 950
950 (this color)
#21010C
oklch(16.3% 0.062 1.6)
#21010C 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) | #06080C | 0.071 |
| Deuteranopia (no green cones) | #100F0B | 0.063 |
| Tritanopia (no blue cones) | #250005 | 0.018 |
| Achromatopsia (no color) | #0C0C0C | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21010C
#21010C
oklch(16.3% 0.062 1.6)
- #00120F
#00120F
oklch(16.4% 0.029 182.3)
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 #21010C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.035
- Almost Black #070D0D ΔE 0.072
- Dark Maroon #3C0008 ΔE 0.073
- Very Dark Purple #2A0134 ΔE 0.083
- Midnight Purple #280137 ΔE 0.088
- Rich Navy #001219 ΔE 0.088
- Deep Brown #410200 ΔE 0.090
- Dark Plum #3F012C ΔE 0.096
Use #21010C 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.