#6564F7
Closest named color: Medium Slate Blue (#7B68EE). oklch(58.8% 0.214 277.9), rgb(101, 100, 247).
Aa
Black text reads best on this color (4.71:1).
About this color
#6564F7 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.214 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.037 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.214) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 4.71:1 |
| White text | 4.44:1 |
Values
| HEX | #6564F7 |
| RGB | rgb(101, 100, 247) |
| HSL | hsl(240, 90%, 68%) |
| OKLCH | oklch(58.8% 0.214 277.9) |
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 #6564F7 | 4.44:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #6564F7 | 4.71:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #6564F7 text on white | 4.44:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #6564F7 text on black | 4.71:1 | AA | Lc -31.3 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FD
oklch(93.7% 0.027 276.8)
-
Step 200
200
#D0D6FD
oklch(88.4% 0.054 278.3)
-
Step 300
300
#B1BBFF
oklch(80.9% 0.097 277.5)
-
Step 400
400
#8B94FE
oklch(70.6% 0.154 278)
-
Step 500
500
#7276FD
oklch(63.2% 0.197 277.9)
-
Step 600
600 (this color)
#6564F7
oklch(58.8% 0.214 277.9)
-
Step 700
700
#4D48CD
oklch(49.1% 0.199 277.8)
-
Step 800
800
#3F3CA6
oklch(42.7% 0.165 278)
-
Step 900
900
#343583
oklch(37.6% 0.128 277.7)
-
Step 950
950
#1E204D
oklch(27% 0.081 277.5)
#6564F7 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) | #007EFC | 0.082 |
| Deuteranopia (no green cones) | #0071F4 | 0.074 |
| Tritanopia (no blue cones) | #0088A4 | 0.183 |
| Achromatopsia (no color) | #777777 | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6564F7
#6564F7
oklch(58.8% 0.214 277.9)
- #907C00
#907C00
oklch(58.7% 0.121 97.8)
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 #6564F7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.037
- Neon Blue #4361EE ΔE 0.046
- Cornflower #6A79F7 ΔE 0.050
- Royal Blue #4169E1 ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.058
- Purpley #8756E4 ΔE 0.064
- Light Indigo #6D5ACF ΔE 0.064
- Warm Blue #4B57DB ΔE 0.065
Use #6564F7 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.