#6B0443
Closest named color: Merlot (#730039). oklch(35% 0.141 351.2), rgb(107, 4, 67).
Aa
White text reads best on this color (12.18:1).
About this color
#6B0443 is a dark, vivid red. In OKLCH its lightness is 35%, its chroma 0.141 and its hue 351°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.026 away. White text reads best on it, at 12.18:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | vivid (0.141) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.72:1 |
| White text | 12.18:1 |
Values
| HEX | #6B0443 |
| RGB | rgb(107, 4, 67) |
| HSL | hsl(323, 93%, 22%) |
| OKLCH | oklch(35% 0.141 351.2) |
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 #6B0443 | 12.18:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #6B0443 | 1.72:1 | Fails | Lc 7.9 | Not readable |
| #6B0443 text on white | 12.18:1 | AAA | Lc 96.0 | Preferred for body text |
| #6B0443 text on black | 1.72:1 | 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 900.
-
Step 50
50
#FEF2F6
oklch(97.2% 0.014 355)
-
Step 100
100
#FBE2EC
oklch(93.6% 0.03 351.5)
-
Step 200
200
#F9CADE
oklch(88.5% 0.059 350.9)
-
Step 300
300
#F6A4C9
oklch(80.9% 0.107 351.1)
-
Step 400
400
#EC6EAD
oklch(70.6% 0.169 351.1)
-
Step 500
500
#E23D99
oklch(63.1% 0.216 351)
-
Step 600
600
#CC0083
oklch(55.6% 0.231 351.2)
-
Step 700
700
#AD006E
oklch(49.2% 0.204 351.3)
-
Step 800
800
#8F005A
oklch(42.7% 0.177 351.4)
-
Step 900
900 (this color)
#6B0443
oklch(35% 0.141 351.2)
-
Step 950
950
#440E2C
oklch(27% 0.089 350.6)
#6B0443 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) | #1D2A44 | 0.161 |
| Deuteranopia (no green cones) | #3A3C41 | 0.141 |
| Tritanopia (no blue cones) | #740025 | 0.056 |
| Achromatopsia (no color) | #353535 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B0443
#6B0443
oklch(35% 0.141 351.2)
- #004636
#004636
oklch(35.1% 0.069 171.2)
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 #6B0443, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.026
- Velvet #750851 ΔE 0.032
- Rich Purple #720058 ΔE 0.039
- Grape Purple #5D1451 ΔE 0.040
- Wine #80013F ΔE 0.049
- Red Purple #820747 ΔE 0.053
- Bordeaux #7B002C ΔE 0.056
- Burgundy #610023 ΔE 0.057
Use #6B0443 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.