#3A100D
Closest named color: Deep Brown (#410200). oklch(24.3% 0.067 27.3), rgb(58, 16, 13).
Aa
White text reads best on this color (16.66:1).
About this color
#3A100D is a very dark, muted red. In OKLCH its lightness is 24%, its chroma 0.067 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.028 away. White text reads best on it, at 16.66:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | muted (0.067) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.25:1 |
| White text | 16.66:1 |
Values
| HEX | #3A100D |
| RGB | rgb(58, 16, 13) |
| HSL | hsl(4, 63%, 14%) |
| OKLCH | oklch(24.3% 0.067 27.3) |
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 #3A100D | 16.66:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #3A100D | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #3A100D text on white | 16.66:1 | AAA | Lc 103.2 | Preferred for body text |
| #3A100D text on black | 1.25:1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E2
oklch(93.5% 0.023 24.1)
-
Step 200
200
#F5CFC9
oklch(88.5% 0.044 28.5)
-
Step 300
300
#F0ADA5
oklch(80.9% 0.08 26.6)
-
Step 400
400
#E57F74
oklch(70.6% 0.128 27.2)
-
Step 500
500
#DA5A50
oklch(63% 0.163 27.2)
-
Step 600
600
#C63B34
oklch(55.7% 0.177 27.4)
-
Step 700
700
#AA2B26
oklch(49% 0.164 27.4)
-
Step 800
800
#8A2621
oklch(42.6% 0.136 27.4)
-
Step 900
900
#6F2520
oklch(37.6% 0.106 27.2)
-
Step 950
950 (this color)
#3A100D
oklch(24.3% 0.067 27.3)
#3A100D 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) | #1B180C | 0.071 |
| Deuteranopia (no green cones) | #26210C | 0.064 |
| Tritanopia (no blue cones) | #400710 | 0.022 |
| Achromatopsia (no color) | #1E1E1E | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A100D
#3A100D
oklch(24.3% 0.067 27.3)
- #00252A
#00252A
oklch(24.2% 0.042 208.1)
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 #3A100D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.028
- Dark Maroon #3C0008 ΔE 0.031
- Chocolate Brown #411900 ΔE 0.038
- Mahogany #4A0100 ΔE 0.040
- Dark Brown #341C02 ΔE 0.042
- Dark Plum #3F012C ΔE 0.070
- Jet #212529 ΔE 0.077
- Aubergine #3D0734 ΔE 0.078
Use #3A100D 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.