#42020B
Closest named color: Deep Brown (#410200). oklch(24.2% 0.094 20.5), rgb(66, 2, 11).
Aa
White text reads best on this color (16.86:1).
About this color
#42020B is a very dark, moderately saturated red. In OKLCH its lightness is 24%, its chroma 0.094 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.017 away. White text reads best on it, at 16.86:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.094) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.24:1 |
| White text | 16.86:1 |
Values
| HEX | #42020B |
| RGB | rgb(66, 2, 11) |
| HSL | hsl(352, 94%, 13%) |
| OKLCH | oklch(24.2% 0.094 20.5) |
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 #42020B | 16.86:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #42020B | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #42020B text on white | 16.86:1 | AAA | Lc 102.7 | Preferred for body text |
| #42020B 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FFE2E1
oklch(93.6% 0.032 20.1)
-
Step 200
200
#FFCAC8
oklch(88.5% 0.061 20.9)
-
Step 300
300
#FFA4A3
oklch(80.9% 0.108 20.4)
-
Step 400
400
#FC6A70
oklch(70.7% 0.179 20.4)
-
Step 500
500
#F4304B
oklch(63.1% 0.227 20.3)
-
Step 600
600
#D70036
oklch(55.6% 0.223 20.4)
-
Step 700
700
#B6002C
oklch(49.1% 0.197 20.5)
-
Step 800
800
#970023
oklch(42.8% 0.172 20.4)
-
Step 900
900
#7E051D
oklch(37.8% 0.148 20.5)
-
Step 950
950 (this color)
#42020B
oklch(24.2% 0.094 20.5)
#42020B 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) | #16140B | 0.105 |
| Deuteranopia (no green cones) | #262209 | 0.096 |
| Tritanopia (no blue cones) | #4A0006 | 0.020 |
| Achromatopsia (no color) | #1D1D1D | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42020B
#42020B
oklch(24.2% 0.094 20.5)
- #002528
#002528
oklch(24.1% 0.041 202.8)
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 #42020B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.017
- Dark Maroon #3C0008 ΔE 0.017
- Mahogany #4A0100 ΔE 0.025
- Chocolate Brown #411900 ΔE 0.054
- Dark Plum #3F012C ΔE 0.061
- Dark Brown #341C02 ΔE 0.067
- Aubergine #3D0734 ΔE 0.074
- Eggplant #380835 ΔE 0.079
Use #42020B 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.