#42131C
Closest named color: Mahogany (#4A0100). oklch(26.7% 0.073 12), rgb(66, 19, 28).
Aa
White text reads best on this color (15.65:1).
About this color
#42131C is a dark, moderately saturated red. In OKLCH its lightness is 27%, its chroma 0.073 and its hue 12°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.042 away. White text reads best on it, at 15.65:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.34:1 |
| White text | 15.65:1 |
Values
| HEX | #42131C |
| RGB | rgb(66, 19, 28) |
| HSL | hsl(349, 55%, 17%) |
| OKLCH | oklch(26.7% 0.073 12) |
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 #42131C | 15.65:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #42131C | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #42131C text on white | 15.65:1 | AAA | Lc 102.1 | Preferred for body text |
| #42131C text on black | 1.34:1 | 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
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FAE3E5
oklch(93.5% 0.025 11.6)
-
Step 200
200
#F7CDD1
oklch(88.5% 0.048 11.6)
-
Step 300
300
#F3AAB2
oklch(81% 0.086 11.9)
-
Step 400
400
#E9798A
oklch(70.7% 0.139 11.7)
-
Step 500
500
#DE516D
oklch(63.1% 0.176 11.8)
-
Step 600
600
#CA2D55
oklch(55.7% 0.192 11.9)
-
Step 700
700
#AE1C45
oklch(49.1% 0.179 12)
-
Step 800
800
#8D1C39
oklch(42.7% 0.148 11.9)
-
Step 900
900
#721F31
oklch(37.8% 0.116 12)
-
Step 950
950 (this color)
#42131C
oklch(26.7% 0.073 12)
#42131C 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) | #1E1D1C | 0.080 |
| Deuteranopia (no green cones) | #2A271B | 0.074 |
| Tritanopia (no blue cones) | #490B16 | 0.020 |
| Achromatopsia (no color) | #232323 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42131C
#42131C
oklch(26.7% 0.073 12)
- #002D2B
#002D2B
oklch(26.8% 0.046 190.2)
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 #42131C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.042
- Deep Brown #410200 ΔE 0.045
- Chocolate Brown #411900 ΔE 0.046
- Dark Maroon #3C0008 ΔE 0.047
- Dark Plum #3F012C ΔE 0.055
- Aubergine #3D0734 ΔE 0.060
- Dark Brown #341C02 ΔE 0.060
- Eggplant #380835 ΔE 0.066
Use #42131C 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.