#310F21
Closest named color: Eggplant (#380835). oklch(23.1% 0.061 350), rgb(49, 15, 33).
Aa
White text reads best on this color (17.20:1).
About this color
#310F21 is a very dark, muted red. In OKLCH its lightness is 23%, its chroma 0.061 and its hue 350°. Its hue sits on the warm side of the wheel. The nearest named color is Eggplant (#380835), ΔE 0.045 away. White text reads best on it, at 17.20:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | muted (0.061) |
| Temperature | warm |
| Nearest name | Eggplant (#380835) |
| Black text | 1.22:1 |
| White text | 17.20:1 |
Values
| HEX | #310F21 |
| RGB | rgb(49, 15, 33) |
| HSL | hsl(328, 53%, 13%) |
| OKLCH | oklch(23.1% 0.061 350) |
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 #310F21 | 17.20:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #310F21 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #310F21 text on white | 17.20:1 | AAA | Lc 103.8 | Preferred for body text |
| #310F21 text on black | 1.22:1 | 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
#F6E5EC
oklch(93.7% 0.021 350.6)
-
Step 200
200
#EFCFDD
oklch(88.5% 0.04 349.7)
-
Step 300
300
#E5AEC7
oklch(80.8% 0.072 349.8)
-
Step 400
400
#D682AB
oklch(70.7% 0.115 349.7)
-
Step 500
500
#C96096
oklch(63.2% 0.147 350)
-
Step 600
600
#B44380
oklch(55.6% 0.16 350.1)
-
Step 700
700
#9A346C
oklch(49% 0.148 350)
-
Step 800
800
#7D2C58
oklch(42.6% 0.123 349.9)
-
Step 900
900
#652949
oklch(37.7% 0.095 349.5)
-
Step 950
950 (this color)
#310F21
oklch(23.1% 0.061 350)
#310F21 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) | #131722 | 0.066 |
| Deuteranopia (no green cones) | #1C1D20 | 0.060 |
| Tritanopia (no blue cones) | #350E16 | 0.023 |
| Achromatopsia (no color) | #1B1B1B | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310F21
#310F21
oklch(23.1% 0.061 350)
- #00241A
#00241A
oklch(23.2% 0.046 170.2)
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 #310F21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Eggplant #380835 ΔE 0.045
- Dark Plum #3F012C ΔE 0.046
- Aubergine #3D0734 ΔE 0.048
- Dark Maroon #3C0008 ΔE 0.049
- Very Dark Purple #2A0134 ΔE 0.060
- Dark Purple #35063E ΔE 0.062
- Deep Brown #410200 ΔE 0.063
- Midnight Purple #280137 ΔE 0.066
Use #310F21 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.