#40021F
Closest named color: Dark Plum (#3F012C). oklch(24.4% 0.095 359), rgb(64, 2, 31).
Aa
White text reads best on this color (16.84:1).
About this color
#40021F is a very dark, moderately saturated red. In OKLCH its lightness is 24%, its chroma 0.095 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.026 away. White text reads best on it, at 16.84:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.095) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.24:1 |
| White text | 16.84:1 |
Values
| HEX | #40021F |
| RGB | rgb(64, 2, 31) |
| HSL | hsl(332, 94%, 13%) |
| OKLCH | oklch(24.4% 0.095 359) |
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 #40021F | 16.84:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #40021F | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #40021F text on white | 16.84:1 | AAA | Lc 102.8 | Preferred for body text |
| #40021F text on black | 1.24:1 | 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
#FFF1F5
oklch(97% 0.016 358)
-
Step 100
100
#FEE1E9
oklch(93.6% 0.033 359.2)
-
Step 200
200
#FDC9D8
oklch(88.6% 0.062 359.3)
-
Step 300
300
#FCA1BF
oklch(80.8% 0.113 358.7)
-
Step 400
400
#F6689E
oklch(70.7% 0.181 359)
-
Step 500
500
#ED2E86
oklch(63.1% 0.231 359.1)
-
Step 600
600
#D00070
oklch(55.6% 0.226 359.1)
-
Step 700
700
#B0005E
oklch(49.1% 0.2 359.1)
-
Step 800
800
#91004D
oklch(42.6% 0.173 358.7)
-
Step 900
900
#7A0440
oklch(37.8% 0.15 359)
-
Step 950
950 (this color)
#40021F
oklch(24.4% 0.095 359)
#40021F 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) | #111520 | 0.108 |
| Deuteranopia (no green cones) | #22211E | 0.096 |
| Tritanopia (no blue cones) | #46000F | 0.032 |
| Achromatopsia (no color) | #1D1D1D | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40021F
#40021F
oklch(24.4% 0.095 359)
- #002720
#002720
oklch(24.4% 0.045 177.7)
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 #40021F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.026
- Dark Maroon #3C0008 ΔE 0.039
- Aubergine #3D0734 ΔE 0.040
- Eggplant #380835 ΔE 0.047
- Deep Brown #410200 ΔE 0.052
- Mahogany #4A0100 ΔE 0.055
- Eggplant Purple #430541 ΔE 0.064
- Dark Purple #35063E ΔE 0.067
Use #40021F 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.