#421015
Closest named color: Mahogany (#4A0100). oklch(26.1% 0.077 18.6), rgb(66, 16, 21).
Aa
White text reads best on this color (15.95:1).
About this color
#421015 is a dark, moderately saturated red. In OKLCH its lightness is 26%, its chroma 0.077 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.033 away. White text reads best on it, at 15.95:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.31:1 |
| White text | 15.95:1 |
Values
| HEX | #421015 |
| RGB | rgb(66, 16, 21) |
| HSL | hsl(354, 61%, 16%) |
| OKLCH | oklch(26.1% 0.077 18.6) |
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 #421015 | 15.95:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #421015 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #421015 text on white | 15.95:1 | AAA | Lc 102.4 | Preferred for body text |
| #421015 text on black | 1.31:1 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E3
oklch(93.5% 0.026 17.6)
-
Step 200
200
#F9CCCC
oklch(88.4% 0.051 18.2)
-
Step 300
300
#F6A9AA
oklch(80.9% 0.091 18.4)
-
Step 400
400
#ED777D
oklch(70.6% 0.146 18.4)
-
Step 500
500
#E44D5C
oklch(63.2% 0.186 18.6)
-
Step 600
600
#CF2442
oklch(55.6% 0.203 18.6)
-
Step 700
700
#B31234
oklch(49.2% 0.188 18.6)
-
Step 800
800
#91162B
oklch(42.7% 0.156 18.8)
-
Step 900
900
#751C27
oklch(37.8% 0.122 18.7)
-
Step 950
950 (this color)
#421015
oklch(26.1% 0.077 18.6)
#421015 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) | #1D1B15 | 0.084 |
| Deuteranopia (no green cones) | #2A2614 | 0.077 |
| Tritanopia (no blue cones) | #490512 | 0.021 |
| Achromatopsia (no color) | #222222 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #421015
#421015
oklch(26.1% 0.077 18.6)
- #002A2C
#002A2C
oklch(25.9% 0.044 199.7)
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 #421015, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.033
- Deep Brown #410200 ΔE 0.033
- Dark Maroon #3C0008 ΔE 0.038
- Chocolate Brown #411900 ΔE 0.041
- Dark Brown #341C02 ΔE 0.056
- Dark Plum #3F012C ΔE 0.060
- Aubergine #3D0734 ΔE 0.067
- Eggplant #380835 ΔE 0.073
Use #421015 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.