#40181D
Closest named color: Chocolate Brown (#411900). oklch(27.1% 0.062 14.5), rgb(64, 24, 29).
Aa
White text reads best on this color (15.36:1).
About this color
#40181D is a dark, muted red. In OKLCH its lightness is 27%, its chroma 0.062 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.041 away. White text reads best on it, at 15.36:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | muted (0.062) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.36:1 |
| White text | 15.36:1 |
Values
| HEX | #40181D |
| RGB | rgb(64, 24, 29) |
| HSL | hsl(353, 45%, 17%) |
| OKLCH | oklch(27.1% 0.062 14.5) |
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 #40181D | 15.36:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #40181D | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #40181D text on white | 15.36:1 | AAA | Lc 102.0 | Preferred for body text |
| #40181D text on black | 1.36:1 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F8E4E5
oklch(93.5% 0.022 14.1)
-
Step 200
200
#F3CFD1
oklch(88.6% 0.041 14.2)
-
Step 300
300
#ECAEB2
oklch(80.9% 0.073 14.5)
-
Step 400
400
#E08089
oklch(70.6% 0.119 14.6)
-
Step 500
500
#D55D6C
oklch(63.2% 0.151 14.8)
-
Step 600
600
#C03F54
oklch(55.7% 0.164 14.8)
-
Step 700
700
#A52F45
oklch(49.1% 0.153 14.2)
-
Step 800
800
#862939
oklch(42.7% 0.127 14.3)
-
Step 900
900
#6C2731
oklch(37.7% 0.098 14.4)
-
Step 950
950 (this color)
#40181D
oklch(27.1% 0.062 14.5)
#40181D 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) | #21201D | 0.068 |
| Deuteranopia (no green cones) | #2B281C | 0.063 |
| Tritanopia (no blue cones) | #46131A | 0.016 |
| Achromatopsia (no color) | #252525 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40181D
#40181D
oklch(27.1% 0.062 14.5)
- #002E2E
#002E2E
oklch(27.3% 0.047 194.8)
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 #40181D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.041
- Mahogany #4A0100 ΔE 0.049
- Deep Brown #410200 ΔE 0.051
- Dark Brown #341C02 ΔE 0.053
- Dark Maroon #3C0008 ΔE 0.055
- Dark Plum #3F012C ΔE 0.063
- Aubergine #3D0734 ΔE 0.066
- Jet #212529 ΔE 0.069
Use #40181D 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.