#431021
Closest named color: Dark Plum (#3F012C). oklch(26.6% 0.08 3.9), rgb(67, 16, 33).
Aa
White text reads best on this color (15.73:1).
About this color
#431021 is a dark, moderately saturated red. In OKLCH its lightness is 27%, its chroma 0.080 and its hue 4°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.043 away. White text reads best on it, at 15.73:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.33:1 |
| White text | 15.73:1 |
Values
| HEX | #431021 |
| RGB | rgb(67, 16, 33) |
| HSL | hsl(340, 61%, 16%) |
| OKLCH | oklch(26.6% 0.08 3.9) |
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 #431021 | 15.73:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #431021 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #431021 text on white | 15.73:1 | AAA | Lc 102.1 | Preferred for body text |
| #431021 text on black | 1.33:1 | 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
#FEF2F4
oklch(97.1% 0.013 5.8)
-
Step 100
100
#FBE3E8
oklch(93.7% 0.027 3.4)
-
Step 200
200
#F9CBD5
oklch(88.5% 0.053 3.6)
-
Step 300
300
#F5A7BA
oklch(80.9% 0.095 3.5)
-
Step 400
400
#EC7496
oklch(70.7% 0.151 3.8)
-
Step 500
500
#E2487C
oklch(63.1% 0.193 4)
-
Step 600
600
#CD1C65
oklch(55.6% 0.21 4)
-
Step 700
700
#B10554
oklch(49.1% 0.195 3.9)
-
Step 800
800
#901045
oklch(42.8% 0.162 3.9)
-
Step 900
900
#73193A
oklch(37.6% 0.126 3.6)
-
Step 950
950 (this color)
#431021
oklch(26.6% 0.08 3.9)
#431021 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) | #1B1D21 | 0.089 |
| Deuteranopia (no green cones) | #282720 | 0.082 |
| Tritanopia (no blue cones) | #490917 | 0.021 |
| Achromatopsia (no color) | #232323 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #431021
#431021
oklch(26.6% 0.08 3.9)
- #002D28
#002D28
oklch(26.7% 0.047 183.5)
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 #431021, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.043
- Mahogany #4A0100 ΔE 0.048
- Aubergine #3D0734 ΔE 0.049
- Dark Maroon #3C0008 ΔE 0.049
- Deep Brown #410200 ΔE 0.051
- Eggplant #380835 ΔE 0.056
- Chocolate Brown #411900 ΔE 0.059
- Eggplant Purple #430541 ΔE 0.067
Use #431021 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.