#42181E
Closest named color: Chocolate Brown (#411900). oklch(27.5% 0.065 13.6), rgb(66, 24, 30).
Aa
White text reads best on this color (15.20:1).
About this color
#42181E is a dark, muted red. In OKLCH its lightness is 28%, its chroma 0.065 and its hue 14°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.043 away. White text reads best on it, at 15.20:1.
| Hue family | Reds |
| Lightness | dark (28%) |
| Chroma | muted (0.065) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.38:1 |
| White text | 15.20:1 |
Values
| HEX | #42181E |
| RGB | rgb(66, 24, 30) |
| HSL | hsl(351, 47%, 18%) |
| OKLCH | oklch(27.5% 0.065 13.6) |
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 #42181E | 15.20:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #42181E | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #42181E text on white | 15.20:1 | AAA | Lc 101.8 | Preferred for body text |
| #42181E text on black | 1.38:1 | 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
#F9E4E5
oklch(93.6% 0.023 14.3)
-
Step 200
200
#F4CED1
oklch(88.5% 0.043 12.6)
-
Step 300
300
#EEADB2
oklch(81% 0.077 13.8)
-
Step 400
400
#E37E8A
oklch(70.7% 0.125 13.2)
-
Step 500
500
#D75A6D
oklch(63.1% 0.158 13.5)
-
Step 600
600
#C23A55
oklch(55.5% 0.172 13.3)
-
Step 700
700
#A72B45
oklch(49% 0.16 13.5)
-
Step 800
800
#882639
oklch(42.7% 0.132 13.6)
-
Step 900
900
#6E2531
oklch(37.8% 0.104 13.7)
-
Step 950
950 (this color)
#42181E
oklch(27.5% 0.065 13.6)
#42181E 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) | #21201E | 0.071 |
| Deuteranopia (no green cones) | #2C291D | 0.066 |
| Tritanopia (no blue cones) | #48121A | 0.017 |
| Achromatopsia (no color) | #262626 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42181E
#42181E
oklch(27.5% 0.065 13.6)
- #002F2E
#002F2E
oklch(27.6% 0.047 192.5)
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 #42181E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.043
- Mahogany #4A0100 ΔE 0.049
- Deep Brown #410200 ΔE 0.052
- Dark Brown #341C02 ΔE 0.057
- Dark Maroon #3C0008 ΔE 0.057
- Dark Plum #3F012C ΔE 0.063
- Aubergine #3D0734 ΔE 0.065
- Eggplant #380835 ΔE 0.071
Use #42181E 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.