#3B0000
Closest named color: Dark Maroon (#3C0008). oklch(22.1% 0.091 29.2), rgb(59, 0, 0).
Aa
White text reads best on this color (17.70:1).
About this color
#3B0000 is a very dark, moderately saturated red. In OKLCH its lightness is 22%, its chroma 0.091 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.014 away. White text reads best on it, at 17.70:1.
| Hue family | Reds |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.091) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.18:1 |
| White text | 17.70:1 |
Values
| HEX | #3B0000 |
| RGB | rgb(59, 0, 0) |
| HSL | hsl(0, 100%, 12%) |
| OKLCH | oklch(22.1% 0.091 29.2) |
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 #3B0000 | 17.70:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #3B0000 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #3B0000 text on white | 17.70:1 | AAA | Lc 103.5 | Preferred for body text |
| #3B0000 text on black | 1.18:1 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE3DE
oklch(93.6% 0.031 30.2)
-
Step 200
200
#FECBC3
oklch(88.5% 0.059 28.6)
-
Step 300
300
#FEA698
oklch(80.9% 0.107 29.5)
-
Step 400
400
#F9705E
oklch(70.7% 0.171 29.6)
-
Step 500
500
#F13B2D
oklch(63% 0.22 29.2)
-
Step 600
600
#D90000
oklch(55.6% 0.228 29.2)
-
Step 700
700
#B80000
oklch(49.1% 0.202 29.2)
-
Step 800
800
#980000
oklch(42.7% 0.175 29.2)
-
Step 900
900
#7C0F09
oklch(37.7% 0.143 29.2)
-
Step 950
950 (this color)
#3B0000
oklch(22.1% 0.091 29.2)
#3B0000 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) | #131000 | 0.100 |
| Deuteranopia (no green cones) | #221D00 | 0.088 |
| Tritanopia (no blue cones) | #420001 | 0.018 |
| Achromatopsia (no color) | #181818 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B0000
#3B0000
oklch(22.1% 0.091 29.2)
- #002024
#002024
oklch(22.3% 0.038 206.6)
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 #3B0000, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.014
- Deep Brown #410200 ΔE 0.017
- Mahogany #4A0100 ΔE 0.039
- Chocolate Brown #411900 ΔE 0.059
- Dark Brown #341C02 ΔE 0.065
- Dark Plum #3F012C ΔE 0.079
- Very Dark Brown #1D0200 ΔE 0.079
- Aubergine #3D0734 ΔE 0.091
Use #3B0000 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.