#310B0B
Closest named color: Dark Maroon (#3C0008). oklch(21.7% 0.062 23.8), rgb(49, 11, 11).
Aa
White text reads best on this color (17.74:1).
About this color
#310B0B is a very dark, muted red. In OKLCH its lightness is 22%, its chroma 0.062 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.030 away. White text reads best on it, at 17.74:1.
| Hue family | Reds |
| Lightness | very dark (22%) |
| Chroma | muted (0.062) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.18:1 |
| White text | 17.74:1 |
Values
| HEX | #310B0B |
| RGB | rgb(49, 11, 11) |
| HSL | hsl(0, 63%, 12%) |
| OKLCH | oklch(21.7% 0.062 23.8) |
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 #310B0B | 17.74:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #310B0B | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #310B0B text on white | 17.74:1 | AAA | Lc 104.2 | Preferred for body text |
| #310B0B 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E3
oklch(93.7% 0.021 24.8)
-
Step 200
200
#F3CFCC
oklch(88.4% 0.041 23.6)
-
Step 300
300
#EDAFAA
oklch(81% 0.073 24)
-
Step 400
400
#E0827D
oklch(70.7% 0.117 23.7)
-
Step 500
500
#D55F5C
oklch(63.1% 0.15 23.8)
-
Step 600
600
#C04142
oklch(55.5% 0.163 23.7)
-
Step 700
700
#A53234
oklch(49% 0.151 23.7)
-
Step 800
800
#862B2B
oklch(42.7% 0.125 24.1)
-
Step 900
900
#6C2827
oklch(37.6% 0.098 23.8)
-
Step 950
950 (this color)
#310B0B
oklch(21.7% 0.062 23.8)
#310B0B 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) | #15130B | 0.066 |
| Deuteranopia (no green cones) | #1F1B0A | 0.060 |
| Tritanopia (no blue cones) | #37040B | 0.019 |
| Achromatopsia (no color) | #181818 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310B0B
#310B0B
oklch(21.7% 0.062 23.8)
- #001F22
#001F22
oklch(21.8% 0.037 203.9)
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 #310B0B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.030
- Deep Brown #410200 ΔE 0.040
- Dark Brown #341C02 ΔE 0.055
- Mahogany #4A0100 ΔE 0.060
- Chocolate Brown #411900 ΔE 0.061
- Very Dark Brown #1D0200 ΔE 0.067
- Dark Plum #3F012C ΔE 0.074
- Eggplant #380835 ΔE 0.082
Use #310B0B 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.