#370721
Closest named color: Dark Plum (#3F012C). oklch(23.1% 0.08 352.1), rgb(55, 7, 33).
Aa
White text reads best on this color (17.28:1).
About this color
#370721 is a very dark, moderately saturated red. In OKLCH its lightness is 23%, its chroma 0.080 and its hue 352°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.030 away. White text reads best on it, at 17.28:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.21:1 |
| White text | 17.28:1 |
Values
| HEX | #370721 |
| RGB | rgb(55, 7, 33) |
| HSL | hsl(328, 77%, 12%) |
| OKLCH | oklch(23.1% 0.08 352.1) |
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 #370721 | 17.28:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #370721 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #370721 text on white | 17.28:1 | AAA | Lc 103.6 | Preferred for body text |
| #370721 text on black | 1.21:1 | 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
#FAE3EC
oklch(93.7% 0.028 352)
-
Step 200
200
#F6CBDD
oklch(88.4% 0.054 351.2)
-
Step 300
300
#F1A7C7
oklch(80.8% 0.096 351.9)
-
Step 400
400
#E675AA
oklch(70.7% 0.151 352.2)
-
Step 500
500
#DB4A95
oklch(63% 0.194 352.2)
-
Step 600
600
#C72180
oklch(55.7% 0.212 352.1)
-
Step 700
700
#AB0D6C
oklch(49.1% 0.197 352)
-
Step 800
800
#8B1358
oklch(42.7% 0.163 352.1)
-
Step 900
900
#701B48
oklch(37.7% 0.126 352.5)
-
Step 950
950 (this color)
#370721
oklch(23.1% 0.08 352.1)
#370721 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) | #0F1522 | 0.091 |
| Deuteranopia (no green cones) | #1D1E20 | 0.080 |
| Tritanopia (no blue cones) | #3C0412 | 0.030 |
| Achromatopsia (no color) | #1B1B1B | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #370721
#370721
oklch(23.1% 0.08 352.1)
- #00241B
#00241B
oklch(23.2% 0.045 172.3)
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 #370721, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.030
- Aubergine #3D0734 ΔE 0.038
- Eggplant #380835 ΔE 0.038
- Dark Maroon #3C0008 ΔE 0.043
- Dark Purple #35063E ΔE 0.057
- Very Dark Purple #2A0134 ΔE 0.058
- Deep Brown #410200 ΔE 0.059
- Deep Purple #36013F ΔE 0.062
Use #370721 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.