#645BAD
Closest named color: Iris (#6258C4). oklch(51.9% 0.126 286.1), rgb(100, 91, 173).
Aa
White text reads best on this color (5.76:1).
About this color
#645BAD is a medium-dark, moderately saturated purple. In OKLCH its lightness is 52%, its chroma 0.126 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.038 away. White text reads best on it, at 5.76:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.64:1 |
| White text | 5.76:1 |
Values
| HEX | #645BAD |
| RGB | rgb(100, 91, 173) |
| HSL | hsl(247, 33%, 52%) |
| OKLCH | oklch(51.9% 0.126 286.1) |
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 #645BAD | 5.76:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #645BAD | 3.64:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #645BAD text on white | 5.76:1 | AA | Lc 78.7 | Fine for body text |
| #645BAD text on black | 3.64:1 | AA large text | Lc -23.1 | Dividers and decoration only |
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 700.
-
Step 50
50
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F6
oklch(93.5% 0.019 286)
-
Step 200
200
#D7D6EF
oklch(88.5% 0.034 287.5)
-
Step 300
300
#BDBBE7
oklch(80.8% 0.062 287)
-
Step 400
400
#9B98DB
oklch(70.8% 0.097 285.7)
-
Step 500
500
#847DD1
oklch(63.2% 0.124 286.1)
-
Step 600
600
#6E64BE
oklch(55.5% 0.136 286.2)
-
Step 700
700 (this color)
#645BAD
oklch(51.9% 0.126 286.1)
-
Step 800
800
#4B4485
oklch(42.6% 0.105 286)
-
Step 900
900
#3F3A6A
oklch(37.7% 0.08 286.6)
-
Step 950
950
#24223E
oklch(26.9% 0.051 285.7)
#645BAD 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) | #3B68B0 | 0.058 |
| Deuteranopia (no green cones) | #3963AB | 0.057 |
| Tritanopia (no blue cones) | #4F6C7C | 0.107 |
| Achromatopsia (no color) | #666666 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645BAD
#645BAD
oklch(51.9% 0.126 286.1)
- #716C00
#716C00
oklch(51.9% 0.111 106.5)
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 #645BAD, closest first.
No curated palette has a color within ΔE 0.04 of #645BAD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.038
- Slate Blue #6A5ACD ΔE 0.051
- Light Indigo #6D5ACF ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.056
- French Blue #436BAD ΔE 0.057
- Dusky Blue #475F94 ΔE 0.060
- Twilight #4E518B ΔE 0.069
- Deep Lavender #8D5EB7 ΔE 0.071
Use #645BAD 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.