#21030D
Closest named color: Very Dark Brown (#1D0200). oklch(16.8% 0.056 2.2), rgb(33, 3, 13).
Aa
White text reads best on this color (19.38:1).
About this color
#21030D is a very dark, muted red. In OKLCH its lightness is 17%, its chroma 0.056 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 19.38:1.
| Hue family | Reds |
| Lightness | very dark (17%) |
| Chroma | muted (0.056) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.08:1 |
| White text | 19.38:1 |
Values
| HEX | #21030D |
| RGB | rgb(33, 3, 13) |
| HSL | hsl(340, 83%, 7%) |
| OKLCH | oklch(16.8% 0.056 2.2) |
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 #21030D | 19.38:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #21030D | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #21030D text on white | 19.38:1 | AAA | Lc 105.3 | Preferred for body text |
| #21030D text on black | 1.08:1 | 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
#FBF3F5
oklch(97.1% 0.009 0.1)
-
Step 100
100
#F6E5E9
oklch(93.7% 0.019 1.4)
-
Step 200
200
#EFD0D7
oklch(88.5% 0.036 2.6)
-
Step 300
300
#E6AFBD
oklch(80.8% 0.066 1.8)
-
Step 400
400
#D7849B
oklch(70.7% 0.105 2.2)
-
Step 500
500
#CA6383
oklch(63.1% 0.135 2)
-
Step 600
600
#B6476C
oklch(55.7% 0.148 2.4)
-
Step 700
700
#9C385A
oklch(49.2% 0.136 2.5)
-
Step 800
800
#7F2F4A
oklch(42.8% 0.114 2.2)
-
Step 900
900
#662B3E
oklch(37.7% 0.087 1.9)
-
Step 950
950 (this color)
#21030D
oklch(16.8% 0.056 2.2)
#21030D 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) | #08090D | 0.063 |
| Deuteranopia (no green cones) | #11100C | 0.057 |
| Tritanopia (no blue cones) | #250106 | 0.017 |
| Achromatopsia (no color) | #0D0D0D | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21030D
#21030D
oklch(16.8% 0.056 2.2)
- #001310
#001310
oklch(16.8% 0.03 182.7)
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 #21030D, 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 0.068
- Dark Maroon #3C0008 ΔE 0.070
- Very Dark Purple #2A0134 ΔE 0.081
- Rich Navy #001219 ΔE 0.082
- Midnight Purple #280137 ΔE 0.086
- Deep Brown #410200 ΔE 0.087
- Rich Black #0D1B2A ΔE 0.091
Use #21030D 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.