#666EA2#666EA2

#666EA2 is a mid, moderate blue. Relative luminance 0.166; OKLCH L 55.3% C 0.081 H 276.7°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#666EA2
RGB	rgb(102, 110, 162)
HSL	hsl(232, 24%, 52%)
HSV	hsv(232, 37%, 64%)
CMYK	cmyk(37%, 32.1%, 0%, 36.5%)
CIE-LAB	lab(47.73, 10.15, -28.99)
CIE-LCH	lch(47.73, 30.71, 289.29°)
OKLab	oklab(55.32% 0.0095 -0.0809)
OKLCH	oklch(55.32% 0.081 276.7)
XYZ	xyz(17.5751, 16.5846, 36.4505)
Luminance	0.1658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666EA2 #A29A66

analogous

#668CA2 #666EA2 #7C66A2

triadic

#666EA2 #A2666E #6EA266

tetradic

#666EA2 #A2668C #A29A66 #66A27C

square

#666EA2 #A2668C #A29A66 #66A27C

split-complementary

#666EA2 #A27C66 #8CA266

monochromatic

#363A58 #4D537E #666EA2 #8C92B9 #B2B6D0

Accessibility & contrast

On white

4.86

#666EA2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#666EA2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666EA2

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666EA2	#FFFFFF	#000000	##FFFFFF
##666EA2	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D74A4

Deuteranopia (green-blind)

#596FA1

Tritanopia (blue-blind)

#557881

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #666ea2;
/* rgb */ color: rgb(102, 110, 162);
/* oklch */ color: oklch(55.3% 0.081 276.7);

Tailwind

colors: {
  custom: {
    50: '#9497bd',
    500: '#666ea2',
    950: '#000000',
  },
}

SCSS

$custom: #666ea2;
$custom-light: #9497bd;
$custom-dark: #000000;

JSON

{
  "hex": "#666ea2",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 162
  },
  "hsl": {
    "h": 232,
    "s": 24.39,
    "l": 51.765
  },
  "oklch": {
    "l": 0.55315,
    "c": 0.08143,
    "h": 276.7
  },
  "luminance": 0.16585
}

Semantic roles & 50–950 ramp

primary

#666EA2

secondary

#BFBCA5

accent

#B567C1

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #666EA2

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

Preview Lab → · Contrast checker → · Palette generator →