#421023
Closest named color: Dark Plum (#3F012C). oklch(26.5% 0.079 0.8), rgb(66, 16, 35).
Aa
White text reads best on this color (15.78:1).
About this color
#421023 is a dark, moderately saturated red. In OKLCH its lightness is 26%, its chroma 0.079 and its hue 1°. 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 15.78:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.079) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.33:1 |
| White text | 15.78:1 |
Values
| HEX | #421023 |
| RGB | rgb(66, 16, 35) |
| HSL | hsl(337, 61%, 16%) |
| OKLCH | oklch(26.5% 0.079 0.8) |
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 #421023 | 15.78:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #421023 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #421023 text on white | 15.78:1 | AAA | Lc 102.2 | Preferred for body text |
| #421023 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#FBE3E9
oklch(93.7% 0.027 0.7)
-
Step 200
200
#F8CBD7
oklch(88.4% 0.053 0.4)
-
Step 300
300
#F4A7BD
oklch(80.9% 0.094 0.8)
-
Step 400
400
#EA749B
oklch(70.6% 0.151 0.8)
-
Step 500
500
#E04983
oklch(63.1% 0.192 0.8)
-
Step 600
600
#CB1F6C
oklch(55.6% 0.208 1)
-
Step 700
700
#AF0A5B
oklch(49.1% 0.194 0.6)
-
Step 800
800
#8E124A
oklch(42.7% 0.16 0.8)
-
Step 900
900
#721A3E
oklch(37.6% 0.125 0.5)
-
Step 950
950 (this color)
#421023
oklch(26.5% 0.079 0.8)
#421023 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) | #1A1D23 | 0.089 |
| Deuteranopia (no green cones) | #272622 | 0.080 |
| Tritanopia (no blue cones) | #480A18 | 0.023 |
| Achromatopsia (no color) | #232323 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #421023
#421023
oklch(26.5% 0.079 0.8)
- #002D26
#002D26
oklch(26.6% 0.049 179.3)
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 #421023, 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 0.044
- Dark Maroon #3C0008 ΔE 0.050
- Eggplant #380835 ΔE 0.051
- Mahogany #4A0100 ΔE 0.052
- Deep Brown #410200 ΔE 0.054
- Chocolate Brown #411900 ΔE 0.063
- Eggplant Purple #430541 ΔE 0.063
Use #421023 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.