#6563EA
Closest named color: Medium Slate Blue (#7B68EE). oklch(57.6% 0.198 278.8), rgb(101, 99, 234).
Aa
White text reads best on this color (4.63:1).
About this color
#6563EA is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.198 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.036 away. White text reads best on it, at 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.198) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 4.52:1 |
| White text | 4.63:1 |
Values
| HEX | #6563EA |
| RGB | rgb(101, 99, 234) |
| HSL | hsl(241, 76%, 65%) |
| OKLCH | oklch(57.6% 0.198 278.8) |
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 #6563EA | 4.63:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #6563EA | 4.52:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #6563EA text on white | 4.63:1 | AA | Lc 71.8 | Content text, not long reading |
| #6563EA text on black | 4.52:1 | AA | Lc -29.9 | 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 600.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E6E9FB
oklch(93.7% 0.024 278.4)
-
Step 200
200
#D1D6FA
oklch(88.4% 0.05 279.1)
-
Step 300
300
#B4BBFA
oklch(80.9% 0.089 279.3)
-
Step 400
400
#8E95F8
oklch(70.6% 0.144 279)
-
Step 500
500
#7578F4
oklch(63.2% 0.182 278.8)
-
Step 600
600 (this color)
#6563EA
oklch(57.6% 0.198 278.8)
-
Step 700
700
#504BC5
oklch(49.1% 0.184 279)
-
Step 800
800
#413E9F
oklch(42.6% 0.153 279.1)
-
Step 900
900
#36367F
oklch(37.6% 0.12 278.9)
-
Step 950
950
#1F214A
oklch(27.1% 0.075 278.1)
#6563EA 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) | #007AEE | 0.082 |
| Deuteranopia (no green cones) | #006FE7 | 0.076 |
| Tritanopia (no blue cones) | #13839D | 0.172 |
| Achromatopsia (no color) | #757575 | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6563EA
#6563EA
oklch(57.6% 0.198 278.8)
- #8B7900
#8B7900
oklch(57.5% 0.119 98.8)
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 #6563EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.036
- Dark Periwinkle #665FD1 ΔE 0.039
- Neon Blue #4361EE ΔE 0.044
- Light Indigo #6D5ACF ΔE 0.046
- Royal Blue #4169E1 ΔE 0.046
- Slate Blue #6A5ACD ΔE 0.048
- Warm Blue #4B57DB ΔE 0.053
- Cornflower #6A79F7 ΔE 0.055
Use #6563EA 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.