#421B01
Closest named color: Chocolate Brown (#411900). oklch(27.5% 0.071 50.4), rgb(66, 27, 1).
Aa
White text reads best on this color (15.12:1).
About this color
#421B01 is a dark, moderately saturated brown. In OKLCH its lightness is 28%, its chroma 0.071 and its hue 50°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.006 away. White text reads best on it, at 15.12:1.
| Hue family | Browns |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.071) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.38:1 |
| White text | 15.12:1 |
Values
| HEX | #421B01 |
| RGB | rgb(66, 27, 1) |
| HSL | hsl(24, 97%, 13%) |
| OKLCH | oklch(27.5% 0.071 50.4) |
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 #421B01 | 15.12:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #421B01 | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #421B01 text on white | 15.12:1 | AAA | Lc 101.6 | Preferred for body text |
| #421B01 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
#FCF3EF
oklch(97% 0.011 45.7)
-
Step 100
100
#F8E6DC
oklch(93.7% 0.024 51.2)
-
Step 200
200
#F4D1BE
oklch(88.5% 0.047 50.2)
-
Step 300
300
#EDB190
oklch(80.8% 0.083 50)
-
Step 400
400
#E2864D
oklch(70.8% 0.134 50.9)
-
Step 500
500
#D56500
oklch(63.2% 0.165 50.7)
-
Step 600
600
#B45400
oklch(55.7% 0.146 50.5)
-
Step 700
700
#984600
oklch(49.2% 0.129 50.6)
-
Step 800
800
#7D3800
oklch(42.6% 0.112 50.3)
-
Step 900
900
#692E00
oklch(37.6% 0.099 50.4)
-
Step 950
950 (this color)
#421B01
oklch(27.5% 0.071 50.4)
#421B01 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) | #262100 | 0.063 |
| Deuteranopia (no green cones) | #302900 | 0.055 |
| Tritanopia (no blue cones) | #491216 | 0.042 |
| Achromatopsia (no color) | #262626 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #421B01
#421B01
oklch(27.5% 0.071 50.4)
- #002C3E
#002C3E
oklch(27.5% 0.056 231.5)
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 #421B01, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.006
- Dark Brown #341C02 ΔE 0.031
- Mahogany #4A0100 ΔE 0.049
- Deep Brown #410200 ΔE 0.052
- Dark Maroon #3C0008 ΔE 0.068
- Jet #212529 ΔE 0.081
- Pakistan Green #283618 ΔE 0.088
- Burgundy #610023 ΔE 0.095
Use #421B01 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.