#310104
Closest named color: Dark Maroon (#3C0008). oklch(19.9% 0.078 23.6), rgb(49, 1, 4).
Aa
White text reads best on this color (18.47:1).
About this color
#310104 is a very dark, moderately saturated red. In OKLCH its lightness is 20%, its chroma 0.078 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.029 away. White text reads best on it, at 18.47:1.
| Hue family | Reds |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.13:1 |
| White text | 18.47:1 |
Values
| HEX | #310104 |
| RGB | rgb(49, 1, 4) |
| HSL | hsl(356, 96%, 10%) |
| OKLCH | oklch(19.9% 0.078 23.6) |
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 #310104 | 18.47:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #310104 | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #310104 text on white | 18.47:1 | AAA | Lc 104.3 | Preferred for body text |
| #310104 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FBE3E1
oklch(93.5% 0.027 23.4)
-
Step 200
200
#FACDC9
oklch(88.6% 0.051 24.1)
-
Step 300
300
#F7A9A4
oklch(80.9% 0.093 23.4)
-
Step 400
400
#EE7773
oklch(70.6% 0.148 23.5)
-
Step 500
500
#E54D4F
oklch(63.1% 0.188 23.6)
-
Step 600
600
#D02432
oklch(55.5% 0.204 23.7)
-
Step 700
700
#B41025
oklch(49.1% 0.191 23.6)
-
Step 800
800
#921520
oklch(42.7% 0.158 23.6)
-
Step 900
900
#751C1F
oklch(37.6% 0.123 23.7)
-
Step 950
950 (this color)
#310104
oklch(19.9% 0.078 23.6)
#310104 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) | #0F0D04 | 0.086 |
| Deuteranopia (no green cones) | #1B1803 | 0.080 |
| Tritanopia (no blue cones) | #370002 | 0.016 |
| Achromatopsia (no color) | #141414 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310104
#310104
oklch(19.9% 0.078 23.6)
- #001A1D
#001A1D
oklch(19.9% 0.034 205)
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 #310104, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.029
- Deep Brown #410200 ΔE 0.043
- Very Dark Brown #1D0200 ΔE 0.055
- Mahogany #4A0100 ΔE 0.065
- Dark Brown #341C02 ΔE 0.075
- Chocolate Brown #411900 ΔE 0.078
- Dark Plum #3F012C ΔE 0.080
- Eggplant #380835 ΔE 0.091
Use #310104 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.