#642447
Closest named color: Grape Purple (#5D1451). oklch(36.7% 0.102 349.3), rgb(100, 36, 71).
Aa
White text reads best on this color (11.13:1).
About this color
#642447 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.102 and its hue 349°. Its hue sits on the warm side of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.045 away. White text reads best on it, at 11.13:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.102) |
| Temperature | warm |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.88:1 |
| White text | 11.13:1 |
Values
| HEX | #642447 |
| RGB | rgb(100, 36, 71) |
| HSL | hsl(327, 47%, 27%) |
| OKLCH | oklch(36.7% 0.102 349.3) |
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 #642447 | 11.13:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #642447 | 1.88:1 | Fails | Lc 8.7 | Not readable |
| #642447 text on white | 11.13:1 | AAA | Lc 95.2 | Preferred for body text |
| #642447 text on black | 1.88:1 | Fails | Lc -7.5 | 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
#FBF3F6
oklch(97.1% 0.009 352.4)
-
Step 100
100
#F6E4EC
oklch(93.6% 0.022 348.8)
-
Step 200
200
#F0CEDD
oklch(88.4% 0.043 349.6)
-
Step 300
300
#E7ADC8
oklch(80.9% 0.076 349.4)
-
Step 400
400
#D980AC
oklch(70.8% 0.122 349.6)
-
Step 500
500
#CC5C98
oklch(63.1% 0.157 349.2)
-
Step 600
600
#B73F82
oklch(55.6% 0.169 349.5)
-
Step 700
700
#9D306E
oklch(49.1% 0.157 349.4)
-
Step 800
800
#80295A
oklch(42.8% 0.131 349.3)
-
Step 900
900 (this color)
#642447
oklch(36.7% 0.102 349.3)
-
Step 950
950
#3D182B
oklch(27.1% 0.064 350.1)
#642447 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) | #2C3448 | 0.111 |
| Deuteranopia (no green cones) | #3E4045 | 0.101 |
| Tritanopia (no blue cones) | #6B2232 | 0.038 |
| Achromatopsia (no color) | #3B3B3B | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642447
#642447
oklch(36.7% 0.102 349.3)
- #004B38
#004B38
oklch(36.7% 0.074 168.9)
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 #642447, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.045
- Merlot #730039 ΔE 0.051
- Velvet #750851 ΔE 0.052
- Rich Purple #720058 ΔE 0.062
- Purple Brown #673A3F ΔE 0.063
- Wine #80013F ΔE 0.064
- Red Purple #820747 ΔE 0.066
- Bordeaux #7B002C ΔE 0.066
Use #642447 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.