#400C21
Closest named color: Dark Plum (#3F012C). oklch(25.5% 0.082 0.3), rgb(64, 12, 33).
Aa
White text reads best on this color (16.24:1).
About this color
#400C21 is a dark, moderately saturated red. In OKLCH its lightness is 26%, its chroma 0.082 and its hue 0°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.034 away. White text reads best on it, at 16.24:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.082) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.29:1 |
| White text | 16.24:1 |
Values
| HEX | #400C21 |
| RGB | rgb(64, 12, 33) |
| HSL | hsl(336, 68%, 15%) |
| OKLCH | oklch(25.5% 0.082 0.3) |
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 #400C21 | 16.24:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #400C21 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #400C21 text on white | 16.24:1 | AAA | Lc 102.6 | Preferred for body text |
| #400C21 text on black | 1.29:1 | 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
#FBE3E9
oklch(93.7% 0.027 0.7)
-
Step 200
200
#F9CBD7
oklch(88.5% 0.054 0.8)
-
Step 300
300
#F5A6BE
oklch(80.8% 0.097 359.7)
-
Step 400
400
#EC729C
oklch(70.6% 0.156 0.1)
-
Step 500
500
#E24584
oklch(63.1% 0.199 0.2)
-
Step 600
600
#CD156D
oklch(55.5% 0.216 0.4)
-
Step 700
700
#B0005B
oklch(49% 0.199 0.4)
-
Step 800
800
#900A4B
oklch(42.7% 0.167 0.2)
-
Step 900
900
#74173E
oklch(37.7% 0.13 0.6)
-
Step 950
950 (this color)
#400C21
oklch(25.5% 0.082 0.3)
#400C21 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) | #171A22 | 0.092 |
| Deuteranopia (no green cones) | #252420 | 0.083 |
| Tritanopia (no blue cones) | #460515 | 0.024 |
| Achromatopsia (no color) | #202020 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #400C21
#400C21
oklch(25.5% 0.082 0.3)
- #002A24
#002A24
oklch(25.5% 0.046 180.7)
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 #400C21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.034
- Aubergine #3D0734 ΔE 0.041
- Dark Maroon #3C0008 ΔE 0.043
- Eggplant #380835 ΔE 0.048
- Deep Brown #410200 ΔE 0.050
- Mahogany #4A0100 ΔE 0.052
- Eggplant Purple #430541 ΔE 0.064
- Chocolate Brown #411900 ΔE 0.066
Use #400C21 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.