#21090D
Closest named color: Very Dark Brown (#1D0200). oklch(18.2% 0.042 11.8), rgb(33, 9, 13).
Aa
White text reads best on this color (18.92:1).
About this color
#21090D is a very dark, muted red. In OKLCH its lightness is 18%, its chroma 0.042 and its hue 12°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.038 away. White text reads best on it, at 18.92:1.
| Hue family | Reds |
| Lightness | very dark (18%) |
| Chroma | muted (0.042) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.10:1 |
| White text | 18.92:1 |
Values
| HEX | #21090D |
| RGB | rgb(33, 9, 13) |
| HSL | hsl(350, 57%, 8%) |
| OKLCH | oklch(18.2% 0.042 11.8) |
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 #21090D | 18.92:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #21090D | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #21090D text on white | 18.92:1 | AAA | Lc 105.2 | Preferred for body text |
| #21090D text on black | 1.10:1 | 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
#FAF4F4
oklch(97.2% 0.006 17.3)
-
Step 100
100
#F3E6E7
oklch(93.6% 0.014 12)
-
Step 200
200
#EBD2D4
oklch(88.5% 0.028 12.2)
-
Step 300
300
#DEB4B8
oklch(80.8% 0.049 11.8)
-
Step 400
400
#CD8C94
oklch(70.7% 0.08 11.2)
-
Step 500
500
#BE6F79
oklch(63.1% 0.101 12.2)
-
Step 600
600
#A95662
oklch(55.6% 0.109 12.2)
-
Step 700
700
#914651
oklch(49.2% 0.102 12.3)
-
Step 800
800
#763A43
oklch(42.8% 0.084 11.8)
-
Step 900
900
#5F3238
oklch(37.7% 0.065 12.2)
-
Step 950
950 (this color)
#21090D
oklch(18.2% 0.042 11.8)
#21090D 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) | #0E0E0D | 0.046 |
| Deuteranopia (no green cones) | #14130C | 0.044 |
| Tritanopia (no blue cones) | #25060A | 0.012 |
| Achromatopsia (no color) | #111111 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21090D
#21090D
oklch(18.2% 0.042 11.8)
- #001615
#001615
oklch(18.1% 0.031 191)
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 #21090D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.038
- Almost Black #070D0D ΔE 0.059
- Dark Maroon #3C0008 ΔE 0.066
- Rich Navy #001219 ΔE 0.072
- Rich Black #0D1B2A ΔE 0.076
- Deep Brown #410200 ΔE 0.080
- Dark Brown #341C02 ΔE 0.084
- Very Dark Purple #2A0134 ΔE 0.086
Use #21090D 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.