#310821
Closest named color: Dark Plum (#3F012C). oklch(22% 0.073 347.2), rgb(49, 8, 33).
Aa
White text reads best on this color (17.68:1).
About this color
#310821 is a very dark, moderately saturated red. In OKLCH its lightness is 22%, its chroma 0.073 and its hue 347°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.040 away. White text reads best on it, at 17.68:1.
| Hue family | Reds |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.18:1 |
| White text | 17.68:1 |
Values
| HEX | #310821 |
| RGB | rgb(49, 8, 33) |
| HSL | hsl(323, 72%, 11%) |
| OKLCH | oklch(22% 0.073 347.2) |
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 #310821 | 17.68:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #310821 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #310821 text on white | 17.68:1 | AAA | Lc 104.0 | Preferred for body text |
| #310821 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
#FCF2F7
oklch(97% 0.013 345.5)
-
Step 100
100
#F7E3ED
oklch(93.5% 0.025 345.8)
-
Step 200
200
#F2CDDF
oklch(88.5% 0.048 347.2)
-
Step 300
300
#EBAACB
oklch(80.9% 0.087 347.4)
-
Step 400
400
#DE7AB1
oklch(70.7% 0.139 347.1)
-
Step 500
500
#D2549E
oklch(63.2% 0.177 347.1)
-
Step 600
600
#BD3388
oklch(55.6% 0.192 347.4)
-
Step 700
700
#A22374
oklch(49% 0.179 346.8)
-
Step 800
800
#84205E
oklch(42.7% 0.149 347.2)
-
Step 900
900
#6A214D
oklch(37.6% 0.116 346.9)
-
Step 950
950 (this color)
#310821
oklch(22% 0.073 347.2)
#310821 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) | #0D1422 | 0.081 |
| Deuteranopia (no green cones) | #191B20 | 0.072 |
| Tritanopia (no blue cones) | #350713 | 0.029 |
| Achromatopsia (no color) | #181818 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310821
#310821
oklch(22% 0.073 347.2)
- #002116
#002116
oklch(22% 0.045 166.9)
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 #310821, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.040
- Eggplant #380835 ΔE 0.041
- Aubergine #3D0734 ΔE 0.045
- Dark Maroon #3C0008 ΔE 0.050
- Very Dark Purple #2A0134 ΔE 0.050
- Dark Purple #35063E ΔE 0.057
- Midnight Purple #280137 ΔE 0.057
- Deep Purple #36013F ΔE 0.061
Use #310821 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.