#644073
Closest named color: Twilight (#4E518B). oklch(43.4% 0.092 315.4), rgb(100, 64, 115).
Aa
White text reads best on this color (8.32:1).
About this color
#644073 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.092 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.062 away. White text reads best on it, at 8.32:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.52:1 |
| White text | 8.32:1 |
Values
| HEX | #644073 |
| RGB | rgb(100, 64, 115) |
| HSL | hsl(282, 28%, 35%) |
| OKLCH | oklch(43.4% 0.092 315.4) |
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 #644073 | 8.32:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #644073 | 2.52:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #644073 text on white | 8.32:1 | AAA | Lc 88.6 | Fine for body text |
| #644073 text on black | 2.52:1 | Fails | Lc -13.6 | 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
#EEE7F1
oklch(93.6% 0.015 316)
-
Step 200
200
#E1D4E7
oklch(88.6% 0.029 315.3)
-
Step 300
300
#CEB7D9
oklch(81% 0.053 314.9)
-
Step 400
400
#B590C5
oklch(70.6% 0.086 315.5)
-
Step 500
500
#A374B6
oklch(63.1% 0.109 315.9)
-
Step 600
600
#8E5CA2
oklch(55.7% 0.118 315.8)
-
Step 700
700
#784B8B
oklch(49% 0.111 315.2)
-
Step 800
800 (this color)
#644073
oklch(43.4% 0.092 315.4)
-
Step 900
900
#50355B
oklch(37.7% 0.071 315.7)
-
Step 950
950
#2F1F35
oklch(26.9% 0.045 316.5)
#644073 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) | #374C75 | 0.076 |
| Deuteranopia (no green cones) | #404F72 | 0.070 |
| Tritanopia (no blue cones) | #634754 | 0.061 |
| Achromatopsia (no color) | #4E4E4E | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644073
#644073
oklch(43.4% 0.092 315.4)
- #395C25
#395C25
oklch(43.4% 0.092 135.5)
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 #644073, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.062
- Dusk #4E5481 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.067
- Dusty Grape #545775 ΔE 0.067
- Brownish Purple #76424E ΔE 0.073
- Rebecca Purple #663399 ΔE 0.074
- Light Eggplant #894585 ΔE 0.078
- Blueberry #464196 ΔE 0.078
Use #644073 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.