#310307
Closest named color: Dark Maroon (#3C0008). oklch(20.3% 0.074 21.2), rgb(49, 3, 7).
Aa
White text reads best on this color (18.31:1).
About this color
#310307 is a very dark, moderately saturated red. In OKLCH its lightness is 20%, its chroma 0.074 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.027 away. White text reads best on it, at 18.31:1.
| Hue family | Reds |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.074) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.14:1 |
| White text | 18.31:1 |
Values
| HEX | #310307 |
| RGB | rgb(49, 3, 7) |
| HSL | hsl(355, 88%, 10%) |
| OKLCH | oklch(20.3% 0.074 21.2) |
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 #310307 | 18.31:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #310307 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #310307 text on white | 18.31:1 | AAA | Lc 104.3 | Preferred for body text |
| #310307 text on black | 1.14:1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FBE4E2
oklch(93.7% 0.025 23.6)
-
Step 200
200
#F8CDCB
oklch(88.5% 0.049 21.2)
-
Step 300
300
#F4AAA8
oklch(80.8% 0.088 20.9)
-
Step 400
400
#EB7A7A
oklch(70.8% 0.14 21.2)
-
Step 500
500
#E15158
oklch(63.1% 0.179 21.1)
-
Step 600
600
#CD2C3D
oklch(55.7% 0.195 21.3)
-
Step 700
700
#B01B2F
oklch(49% 0.181 21.3)
-
Step 800
800
#8F1B28
oklch(42.6% 0.15 21.1)
-
Step 900
900
#731F25
oklch(37.7% 0.117 20.9)
-
Step 950
950 (this color)
#310307
oklch(20.3% 0.074 21.2)
#310307 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) | #100E07 | 0.082 |
| Deuteranopia (no green cones) | #1C1806 | 0.074 |
| Tritanopia (no blue cones) | #370005 | 0.015 |
| Achromatopsia (no color) | #151515 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310307
#310307
oklch(20.3% 0.074 21.2)
- #001B1D
#001B1D
oklch(20.2% 0.034 201.5)
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 #310307, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.027
- Deep Brown #410200 ΔE 0.042
- Very Dark Brown #1D0200 ΔE 0.058
- Mahogany #4A0100 ΔE 0.064
- Dark Brown #341C02 ΔE 0.071
- Chocolate Brown #411900 ΔE 0.075
- Dark Plum #3F012C ΔE 0.075
- Eggplant #380835 ΔE 0.086
Use #310307 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.