#310400
Closest named color: Dark Maroon (#3C0008). oklch(20.3% 0.075 33.3), rgb(49, 4, 0).
Aa
White text reads best on this color (18.29:1).
About this color
#310400 is a very dark, moderately saturated red. In OKLCH its lightness is 20%, its chroma 0.075 and its hue 33°. 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 18.29:1.
| Hue family | Reds |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.075) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.14:1 |
| White text | 18.29:1 |
Values
| HEX | #310400 |
| RGB | rgb(49, 4, 0) |
| HSL | hsl(5, 100%, 10%) |
| OKLCH | oklch(20.3% 0.075 33.3) |
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 #310400 | 18.29:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #310400 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #310400 text on white | 18.29:1 | AAA | Lc 104.3 | Preferred for body text |
| #310400 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FAE4DF
oklch(93.5% 0.025 32.9)
-
Step 200
200
#F8CEC5
oklch(88.5% 0.049 32.1)
-
Step 300
300
#F4AC9C
oklch(80.9% 0.088 33)
-
Step 400
400
#EB7C65
oklch(70.7% 0.142 32.9)
-
Step 500
500
#E15539
oklch(63.1% 0.18 33.2)
-
Step 600
600
#CD310E
oklch(55.6% 0.197 33.1)
-
Step 700
700
#B02300
oklch(49.2% 0.18 33.2)
-
Step 800
800
#8F1F06
oklch(42.6% 0.151 33.2)
-
Step 900
900
#732211
oklch(37.7% 0.117 33.5)
-
Step 950
950 (this color)
#310400
oklch(20.3% 0.075 33.3)
#310400 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) | #120E00 | 0.078 |
| Deuteranopia (no green cones) | #1D1800 | 0.069 |
| Tritanopia (no blue cones) | #370003 | 0.018 |
| Achromatopsia (no color) | #151515 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310400
#310400
oklch(20.3% 0.075 33.3)
- #001B20
#001B20
oklch(20.4% 0.035 211.2)
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 #310400, 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 0.040
- Very Dark Brown #1D0200 ΔE 0.056
- Mahogany #4A0100 ΔE 0.062
- Dark Brown #341C02 ΔE 0.064
- Chocolate Brown #411900 ΔE 0.069
- Dark Plum #3F012C ΔE 0.089
- Almost Black #070D0D ΔE 0.098
Use #310400 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.