#400B21
Closest named color: Dark Plum (#3F012C). oklch(25.4% 0.084 359.9), rgb(64, 11, 33).
Aa
White text reads best on this color (16.30:1).
About this color
#400B21 is a dark, moderately saturated red. In OKLCH its lightness is 25%, its chroma 0.084 and its hue 360°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.032 away. White text reads best on it, at 16.30:1.
| Hue family | Reds |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.28:1 |
| White text | 16.30:1 |
Values
| HEX | #400B21 |
| RGB | rgb(64, 11, 33) |
| HSL | hsl(335, 71%, 15%) |
| OKLCH | oklch(25.4% 0.084 359.9) |
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 #400B21 | 16.30:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #400B21 | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #400B21 text on white | 16.30:1 | AAA | Lc 102.6 | Preferred for body text |
| #400B21 text on black | 1.28:1 | 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
#FEF2F5
oklch(97.1% 0.013 0.3)
-
Step 100
100
#FBE2E9
oklch(93.5% 0.029 358.8)
-
Step 200
200
#F9CBD8
oklch(88.6% 0.054 359.5)
-
Step 300
300
#F6A6BE
oklch(80.9% 0.099 0)
-
Step 400
400
#ED719D
oklch(70.6% 0.159 359.6)
-
Step 500
500
#E34385
oklch(63.1% 0.203 359.7)
-
Step 600
600
#CE0F6E
oklch(55.5% 0.219 359.9)
-
Step 700
700
#B0005C
oklch(49% 0.199 360)
-
Step 800
800
#91064B
oklch(42.8% 0.17 0.2)
-
Step 900
900
#74163F
oklch(37.7% 0.132 359.7)
-
Step 950
950 (this color)
#400B21
oklch(25.4% 0.084 359.9)
#400B21 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) | #161922 | 0.094 |
| Deuteranopia (no green cones) | #252420 | 0.085 |
| Tritanopia (no blue cones) | #460414 | 0.025 |
| Achromatopsia (no color) | #202020 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #400B21
#400B21
oklch(25.4% 0.084 359.9)
- #002A23
#002A23
oklch(25.5% 0.047 178.5)
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 #400B21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.032
- Aubergine #3D0734 ΔE 0.041
- Dark Maroon #3C0008 ΔE 0.043
- Eggplant #380835 ΔE 0.047
- Deep Brown #410200 ΔE 0.051
- Mahogany #4A0100 ΔE 0.052
- Eggplant Purple #430541 ΔE 0.063
- Dark Purple #35063E ΔE 0.067
Use #400B21 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.