#210A04
Closest named color: Very Dark Brown (#1D0200). oklch(18.1% 0.042 38.7), rgb(33, 10, 4).
Aa
White text reads best on this color (18.92:1).
About this color
#210A04 is a very dark, muted red. In OKLCH its lightness is 18%, its chroma 0.042 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.032 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 | #210A04 |
| RGB | rgb(33, 10, 4) |
| HSL | hsl(12, 78%, 7%) |
| OKLCH | oklch(18.1% 0.042 38.7) |
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 #210A04 | 18.92:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #210A04 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #210A04 text on white | 18.92:1 | AAA | Lc 105.2 | Preferred for body text |
| #210A04 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
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F3E7E3
oklch(93.6% 0.014 39.4)
-
Step 200
200
#EBD3CC
oklch(88.5% 0.029 36.9)
-
Step 300
300
#DEB6A9
oklch(80.8% 0.05 38.8)
-
Step 400
400
#CD8F7C
oklch(70.6% 0.081 37.8)
-
Step 500
500
#BE735A
oklch(63.1% 0.102 39.2)
-
Step 600
600
#AA5A40
oklch(55.7% 0.112 38.7)
-
Step 700
700
#914932
oklch(49% 0.104 38.4)
-
Step 800
800
#763D2A
oklch(42.8% 0.085 39.1)
-
Step 900
900
#603426
oklch(37.7% 0.068 38.4)
-
Step 950
950 (this color)
#210A04
oklch(18.1% 0.042 38.7)
#210A04 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) | #100E04 | 0.041 |
| Deuteranopia (no green cones) | #161304 | 0.038 |
| Tritanopia (no blue cones) | #250608 | 0.019 |
| Achromatopsia (no color) | #111111 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #210A04
#210A04
oklch(18.1% 0.042 38.7)
- #00151B
#00151B
oklch(18.1% 0.032 217.3)
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 #210A04, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.032
- Almost Black #070D0D ΔE 0.059
- Dark Maroon #3C0008 ΔE 0.068
- Rich Navy #001219 ΔE 0.075
- Dark Brown #341C02 ΔE 0.077
- Deep Brown #410200 ΔE 0.078
- Rich Black #0D1B2A ΔE 0.083
- Chocolate Brown #411900 ΔE 0.094
Use #210A04 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.