#310101
Closest named color: Dark Maroon (#3C0008). oklch(19.9% 0.079 28.5), rgb(49, 1, 1).
Aa
White text reads best on this color (18.49:1).
About this color
#310101 is a very dark, moderately saturated red. In OKLCH its lightness is 20%, its chroma 0.079 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.031 away. White text reads best on it, at 18.49:1.
| Hue family | Reds |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.079) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.13:1 |
| White text | 18.49:1 |
Values
| HEX | #310101 |
| RGB | rgb(49, 1, 1) |
| HSL | hsl(0, 96%, 10%) |
| OKLCH | oklch(19.9% 0.079 28.5) |
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 #310101 | 18.49:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #310101 | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #310101 text on white | 18.49:1 | AAA | Lc 104.3 | Preferred for body text |
| #310101 text on black | 1.13:1 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FCE4E0
oklch(93.7% 0.027 28.9)
-
Step 200
200
#FACDC6
oklch(88.5% 0.052 28.5)
-
Step 300
300
#F7AA9F
oklch(80.9% 0.093 28.3)
-
Step 400
400
#EF786A
oklch(70.7% 0.149 28.3)
-
Step 500
500
#E64E41
oklch(63.2% 0.19 28.5)
-
Step 600
600
#D1251F
oklch(55.6% 0.207 28.5)
-
Step 700
700
#B51210
oklch(49.2% 0.193 28.6)
-
Step 800
800
#931612
oklch(42.8% 0.16 28.4)
-
Step 900
900
#761D17
oklch(37.8% 0.124 28.4)
-
Step 950
950 (this color)
#310101
oklch(19.9% 0.079 28.5)
#310101 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) | #0F0C01 | 0.087 |
| Deuteranopia (no green cones) | #1C1700 | 0.076 |
| Tritanopia (no blue cones) | #370001 | 0.015 |
| Achromatopsia (no color) | #141414 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310101
#310101
oklch(19.9% 0.079 28.5)
- #001A1E
#001A1E
oklch(19.9% 0.034 208.4)
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 #310101, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.031
- Deep Brown #410200 ΔE 0.043
- Very Dark Brown #1D0200 ΔE 0.054
- Mahogany #4A0100 ΔE 0.065
- Dark Brown #341C02 ΔE 0.072
- Chocolate Brown #411900 ΔE 0.076
- Dark Plum #3F012C ΔE 0.086
- Eggplant #380835 ΔE 0.097
Use #310101 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.