#6645BE
Closest named color: Bluey Purple (#6241C7). oklch(49.5% 0.18 290.9), rgb(102, 69, 190).
Aa
White text reads best on this color (6.64:1).
About this color
#6645BE is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.180 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.018 away. White text reads best on it, at 6.64:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.180) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.15:1 |
| White text | 6.64:1 |
Values
| HEX | #6645BE |
| RGB | rgb(102, 69, 190) |
| HSL | hsl(256, 48%, 51%) |
| OKLCH | oklch(49.5% 0.18 290.9) |
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 #6645BE | 6.64:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #6645BE | 3.15:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #6645BE text on white | 6.64:1 | AA | Lc 82.4 | Fine for body text |
| #6645BE text on black | 3.15:1 | AA large text | Lc -19.5 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FA
oklch(93.5% 0.026 290.7)
-
Step 200
200
#D8D4F8
oklch(88.4% 0.049 290.4)
-
Step 300
300
#C0B7F5
oklch(80.8% 0.087 291)
-
Step 400
400
#A18FF1
oklch(70.6% 0.141 290.8)
-
Step 500
500
#8C70EB
oklch(63% 0.178 290.9)
-
Step 600
600
#7855DA
oklch(55.7% 0.194 290.9)
-
Step 700
700 (this color)
#6645BE
oklch(49.5% 0.18 290.9)
-
Step 800
800
#523999
oklch(42.7% 0.15 290.7)
-
Step 900
900
#43327A
oklch(37.6% 0.118 290.5)
-
Step 950
950
#271E47
oklch(26.9% 0.074 290.7)
#6645BE 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) | #005EC2 | 0.104 |
| Deuteranopia (no green cones) | #005ABB | 0.104 |
| Tritanopia (no blue cones) | #4B627B | 0.146 |
| Achromatopsia (no color) | #5C5C5C | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6645BE
#6645BE
oklch(49.5% 0.18 290.9)
- #656700
#656700
oklch(49.5% 0.109 111.1)
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 #6645BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.018
- Blue With A Hint Of Purple #533CC6 ΔE 0.042
- Iris #6258C4 ΔE 0.043
- Blurple #5539CC ΔE 0.046
- Slate Blue #6A5ACD ΔE 0.052
- Light Indigo #6D5ACF ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.064
- Burple #6832E3 ΔE 0.065
Use #6645BE 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.