#3A0303
Closest named color: Dark Maroon (#3C0008). oklch(22.4% 0.085 27.7), rgb(58, 3, 3).
Aa
White text reads best on this color (17.58:1).
About this color
#3A0303 is a very dark, moderately saturated red. In OKLCH its lightness is 22%, its chroma 0.085 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.012 away. White text reads best on it, at 17.58:1.
| Hue family | Reds |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.085) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.19:1 |
| White text | 17.58:1 |
Values
| HEX | #3A0303 |
| RGB | rgb(58, 3, 3) |
| HSL | hsl(0, 90%, 12%) |
| OKLCH | oklch(22.4% 0.085 27.7) |
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 #3A0303 | 17.58:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #3A0303 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #3A0303 text on white | 17.58:1 | AAA | Lc 103.5 | Preferred for body text |
| #3A0303 text on black | 1.19:1 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC5
oklch(88.5% 0.056 27.9)
-
Step 300
300
#FBA89D
oklch(81% 0.1 27.8)
-
Step 400
400
#F47367
oklch(70.6% 0.161 27.3)
-
Step 500
500
#EC443C
oklch(63.1% 0.206 27.5)
-
Step 600
600
#D70A15
oklch(55.5% 0.223 27.7)
-
Step 700
700
#B7000D
oklch(49% 0.2 27.7)
-
Step 800
800
#97040B
oklch(42.7% 0.172 27.7)
-
Step 900
900
#791613
oklch(37.7% 0.134 27.7)
-
Step 950
950 (this color)
#3A0303
oklch(22.4% 0.085 27.7)
#3A0303 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) | #141102 | 0.094 |
| Deuteranopia (no green cones) | #221D01 | 0.084 |
| Tritanopia (no blue cones) | #410004 | 0.017 |
| Achromatopsia (no color) | #191919 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A0303
#3A0303
oklch(22.4% 0.085 27.7)
- #002025
#002025
oklch(22.3% 0.039 209.5)
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 #3A0303, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.012
- Deep Brown #410200 ΔE 0.018
- Mahogany #4A0100 ΔE 0.040
- Chocolate Brown #411900 ΔE 0.056
- Dark Brown #341C02 ΔE 0.061
- Dark Plum #3F012C ΔE 0.075
- Very Dark Brown #1D0200 ΔE 0.079
- Aubergine #3D0734 ΔE 0.087
Use #3A0303 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.