#37091F
Closest named color: Dark Plum (#3F012C). oklch(23.3% 0.076 355.5), rgb(55, 9, 31).
Aa
White text reads best on this color (17.19:1).
About this color
#37091F is a very dark, moderately saturated red. In OKLCH its lightness is 23%, its chroma 0.076 and its hue 356°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.035 away. White text reads best on it, at 17.19:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.076) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.22:1 |
| White text | 17.19:1 |
Values
| HEX | #37091F |
| RGB | rgb(55, 9, 31) |
| HSL | hsl(331, 72%, 13%) |
| OKLCH | oklch(23.3% 0.076 355.5) |
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 #37091F | 17.19:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #37091F | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #37091F text on white | 17.19:1 | AAA | Lc 103.6 | Preferred for body text |
| #37091F text on black | 1.22:1 | 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
#FDF2F6
oklch(97.1% 0.013 353.1)
-
Step 100
100
#F9E3EA
oklch(93.6% 0.026 356.3)
-
Step 200
200
#F6CCDA
oklch(88.5% 0.051 356.2)
-
Step 300
300
#F0A9C3
oklch(81% 0.089 355.6)
-
Step 400
400
#E577A4
oklch(70.7% 0.144 355.6)
-
Step 500
500
#DA4E8E
oklch(63.1% 0.185 355.5)
-
Step 600
600
#C52978
oklch(55.6% 0.2 355.5)
-
Step 700
700
#AA1965
oklch(49.2% 0.186 355.6)
-
Step 800
800
#8A1952
oklch(42.7% 0.155 355.7)
-
Step 900
900
#6F1E44
oklch(37.7% 0.12 355.7)
-
Step 950
950 (this color)
#37091F
oklch(23.3% 0.076 355.5)
#37091F 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) | #121620 | 0.085 |
| Deuteranopia (no green cones) | #1E1E1E | 0.076 |
| Tritanopia (no blue cones) | #3C0512 | 0.026 |
| Achromatopsia (no color) | #1B1B1B | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37091F
#37091F
oklch(23.3% 0.076 355.5)
- #00241D
#00241D
oklch(23.3% 0.043 176.7)
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 #37091F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.035
- Dark Maroon #3C0008 ΔE 0.039
- Aubergine #3D0734 ΔE 0.043
- Eggplant #380835 ΔE 0.043
- Deep Brown #410200 ΔE 0.054
- Dark Purple #35063E ΔE 0.062
- Very Dark Purple #2A0134 ΔE 0.063
- Mahogany #4A0100 ΔE 0.065
Use #37091F 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.