#666EDF#666EDF

#666EDF is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.9% C 0.169 H 276.8°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#666EDF
RGB	rgb(102, 110, 223)
HSL	hsl(236, 65%, 64%)
HSV	hsv(236, 54%, 87%)
CMYK	cmyk(54.3%, 50.7%, 0%, 12.5%)
CIE-LAB	lab(51.04, 28.68, -58.85)
CIE-LCH	lch(51.04, 65.47, 295.99°)
OKLab	oklab(58.91% 0.0201 -0.1681)
OKLCH	oklch(58.91% 0.169 276.8)
XYZ	xyz(24.3705, 19.3027, 72.2393)
Luminance	0.1930 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666EDF #DFD766

analogous

#66AADF #666EDF #9A66DF

triadic

#666EDF #DF666E #6EDF66

tetradic

#666EDF #DF66AA #DFD766 #66DF9A

square

#666EDF #DF66AA #DFD766 #66DF9A

split-complementary

#666EDF #DF9A66 #AADF66

monochromatic

#232CA8 #333ED4 #666EDF #999EEA #CBCEF4

Accessibility & contrast

On white

4.32

#666EDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#666EDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666EDF

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666EDF	#FFFFFF	#000000	##000000
##666EDF	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#337FE3

Deuteranopia (green-blind)

#2075DD

Tritanopia (blue-blind)

#2A879C

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #666edf;
/* rgb */ color: rgb(102, 110, 223);
/* oklch */ color: oklch(58.9% 0.169 276.8);

Tailwind

colors: {
  custom: {
    50: '#9a97ea',
    500: '#666edf',
    950: '#000000',
  },
}

SCSS

$custom: #666edf;
$custom-light: #9a97ea;
$custom-dark: #000000;

JSON

{
  "hex": "#666edf",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 223
  },
  "hsl": {
    "h": 236.033,
    "s": 65.405,
    "l": 63.725
  },
  "oklch": {
    "l": 0.5891,
    "c": 0.16931,
    "h": 276.8
  },
  "luminance": 0.19304
}

Semantic roles & 50–950 ramp

primary

#666EDF

secondary

#E6E3BB

accent

#C118CD

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666EDF

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →