#640382
Closest named color: Indigo (#4B0082). oklch(37.8% 0.184 315), rgb(100, 3, 130).
Aa
White text reads best on this color (11.18:1).
About this color
#640382 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.184 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.057 away. White text reads best on it, at 11.18:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.184) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.87:1 |
| White text | 11.18:1 |
Values
| HEX | #640382 |
| RGB | rgb(100, 3, 130) |
| HSL | hsl(286, 95%, 26%) |
| OKLCH | oklch(37.8% 0.184 315) |
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 #640382 | 11.18:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #640382 | 1.87:1 | Fails | Lc 10.0 | Not readable |
| #640382 text on white | 11.18:1 | AAA | Lc 93.9 | Preferred for body text |
| #640382 text on black | 1.87:1 | Fails | Lc -8.6 | 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 900.
-
Step 50
50
#FAF2FE
oklch(97.1% 0.018 314.7)
-
Step 100
100
#F4E2FD
oklch(93.5% 0.041 314.6)
-
Step 200
200
#EDCBFC
oklch(88.6% 0.075 315.5)
-
Step 300
300
#E2A5FE
oklch(81% 0.137 314.8)
-
Step 400
400
#D26CFD
oklch(70.7% 0.22 314.7)
-
Step 500
500
#C630FA
oklch(63.2% 0.281 315)
-
Step 600
600
#AC00DD
oklch(55.7% 0.274 315.1)
-
Step 700
700
#9100BB
oklch(49.1% 0.242 315)
-
Step 800
800
#77009B
oklch(42.6% 0.21 314.7)
-
Step 900
900 (this color)
#640382
oklch(37.8% 0.184 315)
-
Step 950
950
#3B0A4C
oklch(27.1% 0.116 315.3)
#640382 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) | #003685 | 0.157 |
| Deuteranopia (no green cones) | #003D80 | 0.160 |
| Tritanopia (no blue cones) | #612B4A | 0.118 |
| Achromatopsia (no color) | #3B3B3B | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #640382
#640382
oklch(37.8% 0.184 315)
- #254E00
#254E00
oklch(37.9% 0.111 135)
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 #640382, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.057
- Purple #800080 ΔE 0.062
- Royal Purple #4B006E ΔE 0.064
- Rebecca Purple #663399 ΔE 0.075
- Rich Purple #720058 ΔE 0.082
- Chrysanthemum #560BAD ΔE 0.082
- Dark Magenta #8B008B ΔE 0.085
- Grape Purple #5D1451 ΔE 0.087
Use #640382 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.