#42181A
Closest named color: Chocolate Brown (#411900). oklch(27.4% 0.065 19.5), rgb(66, 24, 26).
Aa
White text reads best on this color (15.24:1).
About this color
#42181A is a dark, muted red. In OKLCH its lightness is 27%, its chroma 0.065 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.036 away. White text reads best on it, at 15.24:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | muted (0.065) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.37:1 |
| White text | 15.24:1 |
Values
| HEX | #42181A |
| RGB | rgb(66, 24, 26) |
| HSL | hsl(357, 47%, 18%) |
| OKLCH | oklch(27.4% 0.065 19.5) |
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 #42181A | 15.24:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #42181A | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #42181A text on white | 15.24:1 | AAA | Lc 101.8 | Preferred for body text |
| #42181A text on black | 1.37:1 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F9E4E4
oklch(93.6% 0.023 17.6)
-
Step 200
200
#F5CECE
oklch(88.5% 0.044 18)
-
Step 300
300
#EFADAC
oklch(80.9% 0.078 19.9)
-
Step 400
400
#E37F81
oklch(70.7% 0.124 19.4)
-
Step 500
500
#D85A61
oklch(63% 0.159 19.5)
-
Step 600
600
#C33B48
oklch(55.5% 0.172 19.5)
-
Step 700
700
#A82C3A
oklch(49.1% 0.159 19.3)
-
Step 800
800
#892630
oklch(42.7% 0.133 19.3)
-
Step 900
900
#6E252A
oklch(37.6% 0.104 19.6)
-
Step 950
950 (this color)
#42181A
oklch(27.4% 0.065 19.5)
#42181A 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) | #22201A | 0.070 |
| Deuteranopia (no green cones) | #2C2919 | 0.066 |
| Tritanopia (no blue cones) | #491119 | 0.020 |
| Achromatopsia (no color) | #252525 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42181A
#42181A
oklch(27.4% 0.065 19.5)
- #002E30
#002E30
oklch(27.4% 0.047 199.4)
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 #42181A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.036
- Mahogany #4A0100 ΔE 0.045
- Deep Brown #410200 ΔE 0.049
- Dark Brown #341C02 ΔE 0.051
- Dark Maroon #3C0008 ΔE 0.055
- Dark Plum #3F012C ΔE 0.068
- Aubergine #3D0734 ΔE 0.071
- Jet #212529 ΔE 0.073
Use #42181A 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.