#31031C
Closest named color: Dark Plum (#3F012C). oklch(21.1% 0.079 352.3), rgb(49, 3, 28).
Aa
White text reads best on this color (18.09:1).
About this color
#31031C is a very dark, moderately saturated red. In OKLCH its lightness is 21%, its chroma 0.079 and its hue 352°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.045 away. White text reads best on it, at 18.09:1.
| Hue family | Reds |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.079) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.16:1 |
| White text | 18.09:1 |
Values
| HEX | #31031C |
| RGB | rgb(49, 3, 28) |
| HSL | hsl(327, 88%, 10%) |
| OKLCH | oklch(21.1% 0.079 352.3) |
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 #31031C | 18.09:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #31031C | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #31031C text on white | 18.09:1 | AAA | Lc 104.2 | Preferred for body text |
| #31031C text on black | 1.16:1 | 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
#FDF2F6
oklch(97.1% 0.013 353.1)
-
Step 100
100
#F9E3EC
oklch(93.6% 0.027 350.9)
-
Step 200
200
#F6CCDC
oklch(88.6% 0.052 353.3)
-
Step 300
300
#F1A8C7
oklch(81% 0.094 352.3)
-
Step 400
400
#E675AA
oklch(70.7% 0.151 352.2)
-
Step 500
500
#DB4B95
oklch(63.1% 0.193 352.3)
-
Step 600
600
#C6237F
oklch(55.6% 0.209 352.4)
-
Step 700
700
#AA116B
oklch(49% 0.194 352.4)
-
Step 800
800
#8A1558
oklch(42.6% 0.161 351.9)
-
Step 900
900
#6F1C48
oklch(37.7% 0.124 352.2)
-
Step 950
950 (this color)
#31031C
oklch(21.1% 0.079 352.3)
#31031C 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) | #0B101D | 0.089 |
| Deuteranopia (no green cones) | #18191B | 0.079 |
| Tritanopia (no blue cones) | #36010E | 0.029 |
| Achromatopsia (no color) | #161616 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31031C
#31031C
oklch(21.1% 0.079 352.3)
- #001E16
#001E16
oklch(20.9% 0.041 172.1)
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 #31031C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.045
- Dark Maroon #3C0008 ΔE 0.045
- Eggplant #380835 ΔE 0.050
- Aubergine #3D0734 ΔE 0.053
- Very Dark Purple #2A0134 ΔE 0.055
- Midnight Purple #280137 ΔE 0.062
- Deep Brown #410200 ΔE 0.065
- Dark Purple #35063E ΔE 0.066
Use #31031C 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.