#31090A
Closest named color: Dark Maroon (#3C0008). oklch(21.4% 0.065 23.1), rgb(49, 9, 10).
Aa
White text reads best on this color (17.88:1).
About this color
#31090A is a very dark, muted red. In OKLCH its lightness is 21%, its chroma 0.065 and its hue 23°. 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 17.88:1.
| Hue family | Reds |
| Lightness | very dark (21%) |
| Chroma | muted (0.065) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.17:1 |
| White text | 17.88:1 |
Values
| HEX | #31090A |
| RGB | rgb(49, 9, 10) |
| HSL | hsl(358, 69%, 11%) |
| OKLCH | oklch(21.4% 0.065 23.1) |
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 #31090A | 17.88:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #31090A | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #31090A text on white | 17.88:1 | AAA | Lc 104.2 | Preferred for body text |
| #31090A 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F4CFCC
oklch(88.5% 0.042 23.5)
-
Step 300
300
#EEAEA9
oklch(80.9% 0.076 23.9)
-
Step 400
400
#E3807C
oklch(70.7% 0.123 23.1)
-
Step 500
500
#D85C5B
oklch(63.1% 0.157 23.1)
-
Step 600
600
#C33D41
oklch(55.6% 0.17 23)
-
Step 700
700
#A82E33
oklch(49.1% 0.158 23.1)
-
Step 800
800
#88282B
oklch(42.6% 0.13 22.9)
-
Step 900
900
#6E2627
oklch(37.7% 0.103 22.6)
-
Step 950
950 (this color)
#31090A
oklch(21.4% 0.065 23.1)
#31090A 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) | #14120A | 0.070 |
| Deuteranopia (no green cones) | #1E1A09 | 0.063 |
| Tritanopia (no blue cones) | #37020A | 0.019 |
| Achromatopsia (no color) | #171717 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31090A
#31090A
oklch(21.4% 0.065 23.1)
- #001E21
#001E21
oklch(21.4% 0.037 204.1)
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 #31090A, 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 0.040
- Dark Brown #341C02 ΔE 0.059
- Mahogany #4A0100 ΔE 0.060
- Very Dark Brown #1D0200 ΔE 0.064
- Chocolate Brown #411900 ΔE 0.064
- Dark Plum #3F012C ΔE 0.074
- Eggplant #380835 ΔE 0.082
Use #31090A 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.