#210A10
Closest named color: Very Dark Brown (#1D0200). oklch(18.5% 0.04 5.4), rgb(33, 10, 16).
Aa
White text reads best on this color (18.82:1).
About this color
#210A10 is a very dark, muted red. In OKLCH its lightness is 18%, its chroma 0.040 and its hue 5°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.043 away. White text reads best on it, at 18.82:1.
| Hue family | Reds |
| Lightness | very dark (18%) |
| Chroma | muted (0.040) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.11:1 |
| White text | 18.82:1 |
Values
| HEX | #210A10 |
| RGB | rgb(33, 10, 16) |
| HSL | hsl(344, 53%, 8%) |
| OKLCH | oklch(18.5% 0.04 5.4) |
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 #210A10 | 18.82:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #210A10 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #210A10 text on white | 18.82:1 | AAA | Lc 105.2 | Preferred for body text |
| #210A10 text on black | 1.11:1 | 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
#FAF4F5
oklch(97.2% 0.007 5.6)
-
Step 100
100
#F3E6E8
oklch(93.6% 0.014 6.7)
-
Step 200
200
#EAD2D6
oklch(88.5% 0.027 6.2)
-
Step 300
300
#DDB4BC
oklch(80.8% 0.048 5.1)
-
Step 400
400
#CA8D9A
oklch(70.7% 0.076 5.2)
-
Step 500
500
#BB7081
oklch(63.1% 0.097 5.6)
-
Step 600
600
#A6576A
oklch(55.6% 0.105 5.8)
-
Step 700
700
#8E4759
oklch(49.1% 0.098 5.2)
-
Step 800
800
#743A49
oklch(42.7% 0.083 4.7)
-
Step 900
900
#5E323D
oklch(37.7% 0.065 4.6)
-
Step 950
950 (this color)
#210A10
oklch(18.5% 0.04 5.4)
#210A10 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) | #0E0F10 | 0.045 |
| Deuteranopia (no green cones) | #14130F | 0.041 |
| Tritanopia (no blue cones) | #24080C | 0.010 |
| Achromatopsia (no color) | #111111 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #210A10
#210A10
oklch(18.5% 0.04 5.4)
- #001715
#001715
oklch(18.4% 0.032 187.5)
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 #210A10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.043
- Almost Black #070D0D ΔE 0.060
- Dark Maroon #3C0008 ΔE 0.066
- Rich Navy #001219 ΔE 0.070
- Rich Black #0D1B2A ΔE 0.072
- Deep Brown #410200 ΔE 0.081
- Very Dark Purple #2A0134 ΔE 0.081
- Dark Brown #341C02 ΔE 0.084
Use #210A10 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.