#310B19
Closest named color: Dark Maroon (#3C0008). oklch(22.1% 0.063 1), rgb(49, 11, 25).
Aa
White text reads best on this color (17.61:1).
About this color
#310B19 is a very dark, muted red. In OKLCH its lightness is 22%, its chroma 0.063 and its hue 1°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.038 away. White text reads best on it, at 17.61:1.
| Hue family | Reds |
| Lightness | very dark (22%) |
| Chroma | muted (0.063) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.19:1 |
| White text | 17.61:1 |
Values
| HEX | #310B19 |
| RGB | rgb(49, 11, 25) |
| HSL | hsl(338, 63%, 12%) |
| OKLCH | oklch(22.1% 0.063 1) |
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 #310B19 | 17.61:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #310B19 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #310B19 text on white | 17.61:1 | AAA | Lc 104.1 | Preferred for body text |
| #310B19 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
#FCF3F5
oklch(97.2% 0.01 2)
-
Step 100
100
#F7E4E9
oklch(93.5% 0.022 359.7)
-
Step 200
200
#F2CED7
oklch(88.4% 0.042 1.2)
-
Step 300
300
#EBADBE
oklch(81% 0.075 0.9)
-
Step 400
400
#DD7F9C
oklch(70.6% 0.12 0.8)
-
Step 500
500
#D15B84
oklch(63% 0.154 0.7)
-
Step 600
600
#BC3E6D
oklch(55.6% 0.166 1.2)
-
Step 700
700
#A22E5B
oklch(49% 0.156 1.1)
-
Step 800
800
#84284B
oklch(42.8% 0.129 0.9)
-
Step 900
900
#6A263E
oklch(37.6% 0.1 1.2)
-
Step 950
950 (this color)
#310B19
oklch(22.1% 0.063 1)
#310B19 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) | #121419 | 0.071 |
| Deuteranopia (no green cones) | #1C1C18 | 0.066 |
| Tritanopia (no blue cones) | #360711 | 0.018 |
| Achromatopsia (no color) | #191919 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310B19
#310B19
oklch(22.1% 0.063 1)
- #00211C
#00211C
oklch(22.2% 0.04 180.8)
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 #310B19, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.038
- Dark Plum #3F012C ΔE 0.052
- Deep Brown #410200 ΔE 0.053
- Eggplant #380835 ΔE 0.057
- Aubergine #3D0734 ΔE 0.059
- Very Dark Purple #2A0134 ΔE 0.068
- Mahogany #4A0100 ΔE 0.068
- Dark Brown #341C02 ΔE 0.070
Use #310B19 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.