#666FA2#666FA2

#666FA2 is a mid, moderate blue. Relative luminance 0.168; OKLCH L 55.5% C 0.080 H 275.8°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#666FA2
RGB	rgb(102, 111, 162)
HSL	hsl(231, 24%, 52%)
HSV	hsv(231, 37%, 64%)
CMYK	cmyk(37%, 31.5%, 0%, 36.5%)
CIE-LAB	lab(48.01, 9.54, -28.56)
CIE-LCH	lch(48.01, 30.11, 288.47°)
OKLab	oklab(55.53% 0.0081 -0.0796)
OKLCH	oklch(55.53% 0.08 275.8)
XYZ	xyz(17.6836, 16.8016, 36.4867)
Luminance	0.1680 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666FA2 #A29966

analogous

#668DA2 #666FA2 #7B66A2

triadic

#666FA2 #A2666F #6FA266

tetradic

#666FA2 #A2668D #A29966 #66A27B

square

#666FA2 #A2668D #A29966 #66A27B

split-complementary

#666FA2 #A27B66 #8DA266

monochromatic

#363B58 #4D547E #666FA2 #8C93B9 #B2B7D0

Accessibility & contrast

On white

4.82

#666FA2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#666FA2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666FA2

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666FA2	#FFFFFF	#000000	##FFFFFF
##666FA2	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F74A4

Deuteranopia (green-blind)

#5A70A1

Tritanopia (blue-blind)

#557981

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #666fa2;
/* rgb */ color: rgb(102, 111, 162);
/* oklch */ color: oklch(55.5% 0.080 275.8);

Tailwind

colors: {
  custom: {
    50: '#9498bd',
    500: '#666fa2',
    950: '#000000',
  },
}

SCSS

$custom: #666fa2;
$custom-light: #9498bd;
$custom-dark: #000000;

JSON

{
  "hex": "#666fa2",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 162
  },
  "hsl": {
    "h": 231,
    "s": 24.39,
    "l": 51.765
  },
  "oklch": {
    "l": 0.55529,
    "c": 0.08005,
    "h": 275.8
  },
  "luminance": 0.16802
}

Semantic roles & 50–950 ramp

primary

#666FA2

secondary

#BFBBA5

accent

#B367C1

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #666FA2

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

Preview Lab → · Contrast checker → · Palette generator →