#420821
Closest named color: Dark Plum (#3F012C). oklch(25.5% 0.089 0), rgb(66, 8, 33).
Aa
White text reads best on this color (16.29:1).
About this color
#420821 is a dark, moderately saturated red. In OKLCH its lightness is 26%, its chroma 0.089 and its hue 0°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.030 away. White text reads best on it, at 16.29:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.089) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.28:1 |
| White text | 16.29:1 |
Values
| HEX | #420821 |
| RGB | rgb(66, 8, 33) |
| HSL | hsl(334, 78%, 15%) |
| OKLCH | oklch(25.5% 0.089 0) |
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 #420821 | 16.29:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #420821 | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #420821 text on white | 16.29:1 | AAA | Lc 102.5 | Preferred for body text |
| #420821 text on black | 1.28:1 | 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
#FDE2E9
oklch(93.7% 0.031 0.2)
-
Step 200
200
#FBCAD7
oklch(88.5% 0.058 0.7)
-
Step 300
300
#F9A4BE
oklch(80.9% 0.105 359.8)
-
Step 400
400
#F26D9C
oklch(70.8% 0.169 0.2)
-
Step 500
500
#E83A84
oklch(63.1% 0.216 360)
-
Step 600
600
#D0006E
oklch(55.6% 0.225 359.9)
-
Step 700
700
#B0005C
oklch(49% 0.199 360)
-
Step 800
800
#92004B
oklch(42.7% 0.173 0.1)
-
Step 900
900
#770E3E
oklch(37.6% 0.141 0.2)
-
Step 950
950 (this color)
#420821
oklch(25.5% 0.089 0)
#420821 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) | #151922 | 0.102 |
| Deuteranopia (no green cones) | #252420 | 0.091 |
| Tritanopia (no blue cones) | #480113 | 0.027 |
| Achromatopsia (no color) | #202020 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #420821
#420821
oklch(25.5% 0.089 0)
- #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 #420821, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.030
- Aubergine #3D0734 ΔE 0.040
- Dark Maroon #3C0008 ΔE 0.044
- Eggplant #380835 ΔE 0.048
- Deep Brown #410200 ΔE 0.051
- Mahogany #4A0100 ΔE 0.052
- Eggplant Purple #430541 ΔE 0.062
- Dark Purple #35063E ΔE 0.068
Use #420821 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.