#666DA2#666DA2

#666DA2 is a mid, moderate blue. Relative luminance 0.164; OKLCH L 55.1% C 0.083 H 277.5°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#666DA2
RGB	rgb(102, 109, 162)
HSL	hsl(233, 24%, 52%)
HSV	hsv(233, 37%, 64%)
CMYK	cmyk(37%, 32.7%, 0%, 36.5%)
CIE-LAB	lab(47.46, 10.76, -29.42)
CIE-LCH	lch(47.46, 31.32, 290.08°)
OKLab	oklab(55.1% 0.0109 -0.0821)
OKLCH	oklch(55.1% 0.083 277.5)
XYZ	xyz(17.4678, 16.3700, 36.4148)
Luminance	0.1637 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666DA2 #A29B66

analogous

#668BA2 #666DA2 #7D66A2

triadic

#666DA2 #A2666D #6DA266

tetradic

#666DA2 #A2668B #A29B66 #66A27D

square

#666DA2 #A2668B #A29B66 #66A27D

split-complementary

#666DA2 #A27D66 #8BA266

monochromatic

#363A58 #4D527E #666DA2 #8C91B9 #B2B6D0

Accessibility & contrast

On white

4.91

#666DA2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#666DA2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666DA2

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666DA2	#FFFFFF	#000000	##FFFFFF
##666DA2	1.00	4.91	4.27	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C73A4

Deuteranopia (green-blind)

#586EA1

Tritanopia (blue-blind)

#557780

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #666da2;
/* rgb */ color: rgb(102, 109, 162);
/* oklch */ color: oklch(55.1% 0.083 277.5);

Tailwind

colors: {
  custom: {
    50: '#9496bd',
    500: '#666da2',
    950: '#000000',
  },
}

SCSS

$custom: #666da2;
$custom-light: #9496bd;
$custom-dark: #000000;

JSON

{
  "hex": "#666da2",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 162
  },
  "hsl": {
    "h": 233,
    "s": 24.39,
    "l": 51.765
  },
  "oklch": {
    "l": 0.55101,
    "c": 0.08284,
    "h": 277.5
  },
  "luminance": 0.16371
}

Semantic roles & 50–950 ramp

primary

#666DA2

secondary

#BFBCA5

accent

#B667C1

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #666DA2

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

Preview Lab → · Contrast checker → · Palette generator →