#400F21
Closest named color: Dark Plum (#3F012C). oklch(25.9% 0.078 1.7), rgb(64, 15, 33).
Aa
White text reads best on this color (16.05:1).
About this color
#400F21 is a dark, moderately saturated red. In OKLCH its lightness is 26%, its chroma 0.078 and its hue 2°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.039 away. White text reads best on it, at 16.05:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.30:1 |
| White text | 16.05:1 |
Values
| HEX | #400F21 |
| RGB | rgb(64, 15, 33) |
| HSL | hsl(338, 62%, 15%) |
| OKLCH | oklch(25.9% 0.078 1.7) |
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 #400F21 | 16.05:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #400F21 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #400F21 text on white | 16.05:1 | AAA | Lc 102.5 | Preferred for body text |
| #400F21 text on black | 1.30:1 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#FAE3E8
oklch(93.6% 0.026 2.8)
-
Step 200
200
#F7CCD6
oklch(88.5% 0.05 2.5)
-
Step 300
300
#F3A8BC
oklch(80.9% 0.091 1.9)
-
Step 400
400
#E9759A
oklch(70.6% 0.148 1.4)
-
Step 500
500
#DF4B81
oklch(63.1% 0.188 1.8)
-
Step 600
600
#CA236B
oklch(55.6% 0.205 1.5)
-
Step 700
700
#AE1059
oklch(49.1% 0.19 1.6)
-
Step 800
800
#8E1549
oklch(42.8% 0.158 1.7)
-
Step 900
900
#721B3D
oklch(37.7% 0.123 1.5)
-
Step 950
950 (this color)
#400F21
oklch(25.9% 0.078 1.7)
#400F21 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) | #191B21 | 0.087 |
| Deuteranopia (no green cones) | #262520 | 0.079 |
| Tritanopia (no blue cones) | #460916 | 0.022 |
| Achromatopsia (no color) | #212121 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #400F21
#400F21
oklch(25.9% 0.078 1.7)
- #002B25
#002B25
oklch(25.9% 0.047 180.9)
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 #400F21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.039
- Aubergine #3D0734 ΔE 0.045
- Dark Maroon #3C0008 ΔE 0.045
- Deep Brown #410200 ΔE 0.050
- Eggplant #380835 ΔE 0.051
- Mahogany #4A0100 ΔE 0.051
- Chocolate Brown #411900 ΔE 0.062
- Eggplant Purple #430541 ΔE 0.066
Use #400F21 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.