#40100A
Closest named color: Deep Brown (#410200). oklch(25.4% 0.076 30.2), rgb(64, 16, 10).
Aa
White text reads best on this color (16.19:1).
About this color
#40100A is a dark, moderately saturated red. In OKLCH its lightness is 25%, its chroma 0.076 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.025 away. White text reads best on it, at 16.19:1.
| Hue family | Reds |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.076) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.29:1 |
| White text | 16.19:1 |
Values
| HEX | #40100A |
| RGB | rgb(64, 16, 10) |
| HSL | hsl(7, 73%, 15%) |
| OKLCH | oklch(25.4% 0.076 30.2) |
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 #40100A | 16.19:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #40100A | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #40100A text on white | 16.19:1 | AAA | Lc 102.6 | Preferred for body text |
| #40100A text on black | 1.29:1 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F9CEC6
oklch(88.6% 0.05 30.4)
-
Step 300
300
#F5AB9E
oklch(80.9% 0.09 30.2)
-
Step 400
400
#ED7B69
oklch(70.8% 0.144 30.4)
-
Step 500
500
#E3523F
oklch(63.1% 0.184 30.4)
-
Step 600
600
#CE2C1C
oklch(55.5% 0.2 30.1)
-
Step 700
700
#B21B0D
oklch(49.1% 0.186 30.1)
-
Step 800
800
#911C10
oklch(42.8% 0.154 30.2)
-
Step 900
900
#741F16
oklch(37.6% 0.12 29.8)
-
Step 950
950 (this color)
#40100A
oklch(25.4% 0.076 30.2)
#40100A 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) | #1E1A09 | 0.079 |
| Deuteranopia (no green cones) | #292408 | 0.073 |
| Tritanopia (no blue cones) | #47040F | 0.026 |
| Achromatopsia (no color) | #212121 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40100A
#40100A
oklch(25.4% 0.076 30.2)
- #00282E
#00282E
oklch(25.4% 0.044 209.8)
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 #40100A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.025
- Mahogany #4A0100 ΔE 0.029
- Chocolate Brown #411900 ΔE 0.029
- Dark Maroon #3C0008 ΔE 0.036
- Dark Brown #341C02 ΔE 0.044
- Dark Plum #3F012C ΔE 0.074
- Aubergine #3D0734 ΔE 0.082
- Jet #212529 ΔE 0.084
Use #40100A 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.