#310B20
Closest named color: Dark Plum (#3F012C). oklch(22.4% 0.067 349.7), rgb(49, 11, 32).
Aa
White text reads best on this color (17.50:1).
About this color
#310B20 is a very dark, muted red. In OKLCH its lightness is 22%, its chroma 0.067 and its hue 350°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.043 away. White text reads best on it, at 17.50:1.
| Hue family | Reds |
| Lightness | very dark (22%) |
| Chroma | muted (0.067) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.19:1 |
| White text | 17.50:1 |
Values
| HEX | #310B20 |
| RGB | rgb(49, 11, 32) |
| HSL | hsl(327, 63%, 12%) |
| OKLCH | oklch(22.4% 0.067 349.7) |
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 #310B20 | 17.50:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #310B20 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #310B20 text on white | 17.50:1 | AAA | Lc 104.0 | Preferred for body text |
| #310B20 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
#FBF3F6
oklch(97.1% 0.009 352.4)
-
Step 100
100
#F7E4EC
oklch(93.6% 0.023 350.1)
-
Step 200
200
#F1CEDD
oklch(88.5% 0.044 350.3)
-
Step 300
300
#E9ACC8
oklch(80.9% 0.08 349.8)
-
Step 400
400
#DB7EAC
oklch(70.7% 0.127 349.8)
-
Step 500
500
#CF5998
oklch(63.1% 0.164 349.6)
-
Step 600
600
#BA3B82
oklch(55.7% 0.177 349.9)
-
Step 700
700
#A02C6E
oklch(49.2% 0.165 349.9)
-
Step 800
800
#82265A
oklch(42.8% 0.137 349.6)
-
Step 900
900
#69254A
oklch(37.8% 0.107 349.7)
-
Step 950
950 (this color)
#310B20
oklch(22.4% 0.067 349.7)
#310B20 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) | #101521 | 0.074 |
| Deuteranopia (no green cones) | #1B1C1F | 0.066 |
| Tritanopia (no blue cones) | #350914 | 0.024 |
| Achromatopsia (no color) | #191919 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310B20
#310B20
oklch(22.4% 0.067 349.7)
- #002218
#002218
oklch(22.4% 0.045 169.4)
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 #310B20, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.043
- Eggplant #380835 ΔE 0.044
- Dark Maroon #3C0008 ΔE 0.047
- Aubergine #3D0734 ΔE 0.047
- Very Dark Purple #2A0134 ΔE 0.055
- Dark Purple #35063E ΔE 0.060
- Midnight Purple #280137 ΔE 0.062
- Deep Brown #410200 ΔE 0.063
Use #310B20 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.