#31011F
Closest named color: Dark Plum (#3F012C). oklch(20.9% 0.085 347.7), rgb(49, 1, 31).
Aa
White text reads best on this color (18.18:1).
About this color
#31011F is a very dark, moderately saturated red. In OKLCH its lightness is 21%, its chroma 0.085 and its hue 348°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.042 away. White text reads best on it, at 18.18:1.
| Hue family | Reds |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.085) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.15:1 |
| White text | 18.18:1 |
Values
| HEX | #31011F |
| RGB | rgb(49, 1, 31) |
| HSL | hsl(323, 96%, 10%) |
| OKLCH | oklch(20.9% 0.085 347.7) |
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 #31011F | 18.18:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #31011F | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #31011F text on white | 18.18:1 | AAA | Lc 104.1 | Preferred for body text |
| #31011F text on black | 1.15:1 | 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
#FDF2F7
oklch(97.1% 0.013 347.9)
-
Step 100
100
#FAE2ED
oklch(93.5% 0.03 348.2)
-
Step 200
200
#F6CBE0
oklch(88.5% 0.055 347.3)
-
Step 300
300
#F2A6CC
oklch(80.9% 0.101 348.2)
-
Step 400
400
#E772B3
oklch(70.7% 0.162 347.6)
-
Step 500
500
#DC45A0
oklch(63.1% 0.206 347.6)
-
Step 600
600
#C7158B
oklch(55.6% 0.225 347.5)
-
Step 700
700
#AB0075
oklch(49.1% 0.206 347.8)
-
Step 800
800
#8B0A60
oklch(42.6% 0.173 347.4)
-
Step 900
900
#70174E
oklch(37.6% 0.135 347.7)
-
Step 950
950 (this color)
#31011F
oklch(20.9% 0.085 347.7)
#31011F 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) | #071020 | 0.098 |
| Deuteranopia (no green cones) | #17191E | 0.084 |
| Tritanopia (no blue cones) | #35000E | 0.035 |
| Achromatopsia (no color) | #151515 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31011F
#31011F
oklch(20.9% 0.085 347.7)
- #001E14
#001E14
oklch(20.9% 0.042 167.5)
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 #31011F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.042
- Eggplant #380835 ΔE 0.046
- Very Dark Purple #2A0134 ΔE 0.048
- Aubergine #3D0734 ΔE 0.050
- Dark Maroon #3C0008 ΔE 0.052
- Midnight Purple #280137 ΔE 0.056
- Dark Purple #35063E ΔE 0.060
- Deep Purple #36013F ΔE 0.062
Use #31011F 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.