#821F37
Closest named color: Red Wine (#8C0034). oklch(40.9% 0.134 11.5), rgb(130, 31, 55).
Aa
White text reads best on this color (9.54:1).
About this color
#821F37 is a dark, moderately saturated red. In OKLCH its lightness is 41%, its chroma 0.134 and its hue 11°. Its hue sits on the warm side of the wheel. The nearest named color is Red Wine (#8C0034), ΔE 0.030 away. White text reads best on it, at 9.54:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.134) |
| Temperature | warm |
| Nearest name | Red Wine (#8C0034) |
| Black text | 2.20:1 |
| White text | 9.54:1 |
Values
| HEX | #821F37 |
| RGB | rgb(130, 31, 55) |
| HSL | hsl(345, 61%, 32%) |
| OKLCH | oklch(40.9% 0.134 11.5) |
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 #821F37 | 9.54:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #821F37 | 2.20:1 | Fails | Lc 13.0 | Not readable |
| #821F37 text on white | 9.54:1 | AAA | Lc 91.0 | Preferred for body text |
| #821F37 text on black | 2.20:1 | Fails | Lc -11.4 | 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 800.
-
Step 50
50
#FCF3F4
oklch(97.1% 0.01 9.5)
-
Step 100
100
#F9E4E6
oklch(93.6% 0.023 11)
-
Step 200
200
#F4CED2
oklch(88.5% 0.043 10.8)
-
Step 300
300
#EEACB4
oklch(80.9% 0.078 10.9)
-
Step 400
400
#E37E8C
oklch(70.8% 0.125 11.9)
-
Step 500
500
#D75970
oklch(63.1% 0.159 11.7)
-
Step 600
600
#C33959
oklch(55.7% 0.174 11.4)
-
Step 700
700
#A72A49
oklch(49% 0.161 11.2)
-
Step 800
800 (this color)
#821F37
oklch(40.9% 0.134 11.5)
-
Step 900
900
#6E2433
oklch(37.7% 0.105 11.5)
-
Step 950
950
#41161E
oklch(27% 0.067 11.3)
#821F37 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) | #393837 | 0.148 |
| Deuteranopia (no green cones) | #524D34 | 0.137 |
| Tritanopia (no blue cones) | #8E0329 | 0.033 |
| Achromatopsia (no color) | #454545 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #821F37
#821F37
oklch(40.9% 0.134 11.5)
- #005653
#005653
oklch(40.9% 0.07 190.7)
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 #821F37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Wine #8C0034 ΔE 0.030
- Bordeaux #7B002C ΔE 0.040
- Wine #80013F ΔE 0.040
- Wine Red #7B0323 ΔE 0.041
- Red Purple #820747 ΔE 0.043
- Mulberry #920A4E ΔE 0.054
- Dark Red #8B0000 ΔE 0.056
- Purple Red #990147 ΔE 0.057
Use #821F37 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.