#421F18
Closest named color: Chocolate Brown (#411900). oklch(28.6% 0.056 32.5), rgb(66, 31, 24).
Aa
White text reads best on this color (14.57:1).
About this color
#421F18 is a dark, muted red. In OKLCH its lightness is 29%, its chroma 0.056 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.030 away. White text reads best on it, at 14.57:1.
| Hue family | Reds |
| Lightness | dark (29%) |
| Chroma | muted (0.056) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.44:1 |
| White text | 14.57:1 |
Values
| HEX | #421F18 |
| RGB | rgb(66, 31, 24) |
| HSL | hsl(10, 47%, 18%) |
| OKLCH | oklch(28.6% 0.056 32.5) |
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 #421F18 | 14.57:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #421F18 | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #421F18 text on white | 14.57:1 | AAA | Lc 101.2 | Preferred for body text |
| #421F18 text on black | 1.44:1 | 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
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E6E2
oklch(93.7% 0.018 34.3)
-
Step 200
200
#F0D1CA
oklch(88.5% 0.036 32.8)
-
Step 300
300
#E8B2A6
oklch(81% 0.066 32.8)
-
Step 400
400
#DA8776
oklch(70.6% 0.106 32.3)
-
Step 500
500
#CE6752
oklch(63.1% 0.135 32.9)
-
Step 600
600
#B94B37
oklch(55.5% 0.147 32.3)
-
Step 700
700
#9F3B29
oklch(49% 0.137 32.3)
-
Step 800
800
#823223
oklch(42.8% 0.114 32.6)
-
Step 900
900
#682D21
oklch(37.6% 0.088 33)
-
Step 950
950 (this color)
#421F18
oklch(28.6% 0.056 32.5)
#421F18 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) | #282417 | 0.055 |
| Deuteranopia (no green cones) | #302C17 | 0.053 |
| Tritanopia (no blue cones) | #49191D | 0.024 |
| Achromatopsia (no color) | #292929 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #421F18
#421F18
oklch(28.6% 0.056 32.5)
- #003139
#003139
oklch(28.7% 0.05 211.9)
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 #421F18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.030
- Dark Brown #341C02 ΔE 0.045
- Mahogany #4A0100 ΔE 0.056
- Deep Brown #410200 ΔE 0.062
- Jet #212529 ΔE 0.068
- Dark Maroon #3C0008 ΔE 0.072
- Space Cadet #2B2D42 ΔE 0.081
- Burgundy #610023 ΔE 0.083
Use #421F18 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.