#310313
Closest named color: Dark Maroon (#3C0008). oklch(20.7% 0.075 4.8), rgb(49, 3, 19).
Aa
White text reads best on this color (18.21:1).
About this color
#310313 is a very dark, moderately saturated red. In OKLCH its lightness is 21%, its chroma 0.075 and its hue 5°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.033 away. White text reads best on it, at 18.21:1.
| Hue family | Reds |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.075) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.15:1 |
| White text | 18.21:1 |
Values
| HEX | #310313 |
| RGB | rgb(49, 3, 19) |
| HSL | hsl(339, 88%, 10%) |
| OKLCH | oklch(20.7% 0.075 4.8) |
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 #310313 | 18.21:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #310313 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #310313 text on white | 18.21:1 | AAA | Lc 104.3 | Preferred for body text |
| #310313 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
#FDF2F4
oklch(97% 0.012 4.7)
-
Step 100
100
#FAE3E7
oklch(93.6% 0.026 5.7)
-
Step 200
200
#F7CCD5
oklch(88.5% 0.05 4.1)
-
Step 300
300
#F3A9B9
oklch(81% 0.089 5)
-
Step 400
400
#E97795
oklch(70.7% 0.143 4.7)
-
Step 500
500
#DE4E7B
oklch(63.1% 0.182 4.8)
-
Step 600
600
#C92864
oklch(55.5% 0.198 4.8)
-
Step 700
700
#AE1753
oklch(49.2% 0.185 4.9)
-
Step 800
800
#8D1844
oklch(42.7% 0.153 4.7)
-
Step 900
900
#711D39
oklch(37.6% 0.119 4.8)
-
Step 950
950 (this color)
#310313
oklch(20.7% 0.075 4.8)
#310313 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) | #0E0F13 | 0.085 |
| Deuteranopia (no green cones) | #1A1912 | 0.078 |
| Tritanopia (no blue cones) | #360009 | 0.020 |
| Achromatopsia (no color) | #151515 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310313
#310313
oklch(20.7% 0.075 4.8)
- #001D1A
#001D1A
oklch(20.8% 0.037 185.4)
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 #310313, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.033
- Deep Brown #410200 ΔE 0.052
- Dark Plum #3F012C ΔE 0.057
- Eggplant #380835 ΔE 0.066
- Aubergine #3D0734 ΔE 0.068
- Very Dark Brown #1D0200 ΔE 0.068
- Mahogany #4A0100 ΔE 0.070
- Very Dark Purple #2A0134 ΔE 0.071
Use #310313 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.