#40181A
Closest named color: Chocolate Brown (#411900). oklch(27.1% 0.063 19.2), rgb(64, 24, 26).
Aa
White text reads best on this color (15.40:1).
About this color
#40181A is a dark, muted red. In OKLCH its lightness is 27%, its chroma 0.063 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.036 away. White text reads best on it, at 15.40:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | muted (0.063) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.36:1 |
| White text | 15.40:1 |
Values
| HEX | #40181A |
| RGB | rgb(64, 24, 26) |
| HSL | hsl(357, 45%, 17%) |
| OKLCH | oklch(27.1% 0.063 19.2) |
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 #40181A | 15.40:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #40181A | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #40181A text on white | 15.40:1 | AAA | Lc 102.0 | Preferred for body text |
| #40181A 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
#F8E5E4
oklch(93.7% 0.021 21.2)
-
Step 200
200
#F3CFCE
oklch(88.5% 0.041 19.8)
-
Step 300
300
#EDAEAE
oklch(80.9% 0.074 18.8)
-
Step 400
400
#E18183
oklch(70.8% 0.119 19.2)
-
Step 500
500
#D55D64
oklch(63% 0.151 19)
-
Step 600
600
#C13F4B
oklch(55.6% 0.165 19.1)
-
Step 700
700
#A6303C
oklch(49.1% 0.153 19.3)
-
Step 800
800
#872932
oklch(42.7% 0.128 19)
-
Step 900
900
#6C272C
oklch(37.6% 0.098 18.9)
-
Step 950
950 (this color)
#40181A
oklch(27.1% 0.063 19.2)
#40181A 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) | #21201A | 0.068 |
| Deuteranopia (no green cones) | #2B2819 | 0.063 |
| Tritanopia (no blue cones) | #461219 | 0.017 |
| Achromatopsia (no color) | #252525 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40181A
#40181A
oklch(27.1% 0.063 19.2)
- #002D2F
#002D2F
oklch(27% 0.046 199.4)
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 #40181A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.036
- Mahogany #4A0100 ΔE 0.046
- Deep Brown #410200 ΔE 0.048
- Dark Brown #341C02 ΔE 0.049
- Dark Maroon #3C0008 ΔE 0.053
- Dark Plum #3F012C ΔE 0.067
- Jet #212529 ΔE 0.070
- Aubergine #3D0734 ΔE 0.070
Use #40181A 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.