#644375
Closest named color: Dusk (#4E5481). oklch(44.1% 0.088 313.5), rgb(100, 67, 117).
Aa
White text reads best on this color (8.07:1).
About this color
#644375 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.088 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.056 away. White text reads best on it, at 8.07:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.088) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.60:1 |
| White text | 8.07:1 |
Values
| HEX | #644375 |
| RGB | rgb(100, 67, 117) |
| HSL | hsl(280, 27%, 36%) |
| OKLCH | oklch(44.1% 0.088 313.5) |
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 #644375 | 8.07:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #644375 | 2.60:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #644375 text on white | 8.07:1 | AAA | Lc 87.8 | Fine for body text |
| #644375 text on black | 2.60:1 | Fails | Lc -14.3 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F1
oklch(93.6% 0.015 312.2)
-
Step 200
200
#E0D4E7
oklch(88.5% 0.029 313.3)
-
Step 300
300
#CDB7D9
oklch(80.9% 0.053 313.7)
-
Step 400
400
#B392C5
oklch(70.8% 0.081 313.5)
-
Step 500
500
#A076B7
oklch(63.2% 0.106 313.1)
-
Step 600
600
#8B5DA2
oklch(55.5% 0.115 313.7)
-
Step 700
700
#764D8B
oklch(49.1% 0.106 313.4)
-
Step 800
800 (this color)
#644375
oklch(44.1% 0.088 313.5)
-
Step 900
900
#4F365B
oklch(37.7% 0.069 314.3)
-
Step 950
950
#2E2035
oklch(27% 0.043 314)
#644375 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) | #3A4E77 | 0.071 |
| Deuteranopia (no green cones) | #425174 | 0.065 |
| Tritanopia (no blue cones) | #634A56 | 0.061 |
| Achromatopsia (no color) | #505050 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644375
#644375
oklch(44.1% 0.088 313.5)
- #3E5D27
#3E5D27
oklch(44.1% 0.089 133.6)
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 #644375, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.056
- Twilight #4E518B ΔE 0.056
- Dusty Grape #545775 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.067
- Brownish Purple #76424E ΔE 0.072
- Light Eggplant #894585 ΔE 0.075
- Rebecca Purple #663399 ΔE 0.075
- Blueberry #464196 ΔE 0.077
Use #644375 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.