#31090D
Closest named color: Dark Maroon (#3C0008). oklch(21.4% 0.064 18.8), rgb(49, 9, 13).
Aa
White text reads best on this color (17.86:1).
About this color
#31090D is a very dark, muted red. In OKLCH its lightness is 21%, its chroma 0.064 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.028 away. White text reads best on it, at 17.86:1.
| Hue family | Reds |
| Lightness | very dark (21%) |
| Chroma | muted (0.064) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.17:1 |
| White text | 17.86:1 |
Values
| HEX | #31090D |
| RGB | rgb(49, 9, 13) |
| HSL | hsl(354, 69%, 11%) |
| OKLCH | oklch(21.4% 0.064 18.8) |
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 #31090D | 17.86:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #31090D | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #31090D text on white | 17.86:1 | AAA | Lc 104.2 | Preferred for body text |
| #31090D text on black | 1.17:1 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F8E4E4
oklch(93.5% 0.022 17.6)
-
Step 200
200
#F4CFCE
oklch(88.6% 0.042 19.8)
-
Step 300
300
#EEADAD
oklch(80.8% 0.077 18.9)
-
Step 400
400
#E28082
oklch(70.7% 0.121 19.3)
-
Step 500
500
#D75B63
oklch(63% 0.156 18.9)
-
Step 600
600
#C33C4A
oklch(55.6% 0.171 18.9)
-
Step 700
700
#A72D3C
oklch(49% 0.157 18.5)
-
Step 800
800
#882731
oklch(42.7% 0.131 19)
-
Step 900
900
#6E262C
oklch(37.8% 0.102 18.6)
-
Step 950
950 (this color)
#31090D
oklch(21.4% 0.064 18.8)
#31090D 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) | #13120D | 0.071 |
| Deuteranopia (no green cones) | #1E1A0C | 0.063 |
| Tritanopia (no blue cones) | #37020B | 0.018 |
| Achromatopsia (no color) | #171717 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31090D
#31090D
oklch(21.4% 0.064 18.8)
- #001E20
#001E20
oklch(21.4% 0.036 201)
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 #31090D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.028
- Deep Brown #410200 ΔE 0.041
- Mahogany #4A0100 ΔE 0.061
- Dark Brown #341C02 ΔE 0.061
- Very Dark Brown #1D0200 ΔE 0.066
- Chocolate Brown #411900 ΔE 0.066
- Dark Plum #3F012C ΔE 0.070
- Eggplant #380835 ΔE 0.078
Use #31090D 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.