#40101B
Closest named color: Dark Maroon (#3C0008). oklch(25.8% 0.075 10.3), rgb(64, 16, 27).
Aa
White text reads best on this color (16.05:1).
About this color
#40101B is a dark, moderately saturated red. In OKLCH its lightness is 26%, its chroma 0.075 and its hue 10°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.039 away. White text reads best on it, at 16.05:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.075) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.30:1 |
| White text | 16.05:1 |
Values
| HEX | #40101B |
| RGB | rgb(64, 16, 27) |
| HSL | hsl(346, 60%, 16%) |
| OKLCH | oklch(25.8% 0.075 10.3) |
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 #40101B | 16.05:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #40101B | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #40101B text on white | 16.05:1 | AAA | Lc 102.5 | Preferred for body text |
| #40101B text on black | 1.30:1 | 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
#FAE3E6
oklch(93.5% 0.026 8.6)
-
Step 200
200
#F8CCD1
oklch(88.4% 0.05 10.5)
-
Step 300
300
#F4A9B3
oklch(80.9% 0.089 10.5)
-
Step 400
400
#EA788C
oklch(70.8% 0.141 10.3)
-
Step 500
500
#E04F6F
oklch(63.2% 0.181 10.7)
-
Step 600
600
#CB2958
oklch(55.6% 0.197 10.3)
-
Step 700
700
#AF1848
oklch(49.1% 0.183 10.3)
-
Step 800
800
#8E193B
oklch(42.7% 0.151 10.4)
-
Step 900
900
#721E33
oklch(37.7% 0.117 10.1)
-
Step 950
950 (this color)
#40101B
oklch(25.8% 0.075 10.3)
#40101B 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) | #1B1B1B | 0.083 |
| Deuteranopia (no green cones) | #28251A | 0.076 |
| Tritanopia (no blue cones) | #460814 | 0.018 |
| Achromatopsia (no color) | #212121 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40101B
#40101B
oklch(25.8% 0.075 10.3)
- #002A28
#002A28
oklch(25.7% 0.044 189.9)
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 #40101B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.039
- Deep Brown #410200 ΔE 0.041
- Mahogany #4A0100 ΔE 0.042
- Dark Plum #3F012C ΔE 0.050
- Chocolate Brown #411900 ΔE 0.050
- Aubergine #3D0734 ΔE 0.056
- Dark Brown #341C02 ΔE 0.062
- Eggplant #380835 ΔE 0.062
Use #40101B 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.