#666EAF#666EAF

#666EAF is a mid, moderate blue. Relative luminance 0.171; OKLCH L 56.0% C 0.101 H 277.3°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#666EAF
RGB	rgb(102, 110, 175)
HSL	hsl(233, 31%, 54%)
HSV	hsv(233, 42%, 69%)
CMYK	cmyk(41.7%, 37.1%, 0%, 31.4%)
CIE-LAB	lab(48.35, 13.91, -35.62)
CIE-LCH	lch(48.35, 38.24, 291.33°)
OKLab	oklab(55.99% 0.0128 -0.1001)
OKLCH	oklch(55.99% 0.101 277.3)
XYZ	xyz(18.7910, 17.0709, 42.8540)
Luminance	0.1707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666EAF #AFA766

analogous

#6693AF #666EAF #8366AF

triadic

#666EAF #AF666E #6EAF66

tetradic

#666EAF #AF6693 #AFA766 #66AF83

square

#666EAF #AF6693 #AFA766 #66AF83

split-complementary

#666EAF #AF8366 #93AF66

monochromatic

#353A66 #4A528E #666EAF #8E94C4 #B6BAD9

Accessibility & contrast

On white

4.76

#666EAF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#666EAF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666EAF

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666EAF	#FFFFFF	#000000	##FFFFFF
##666EAF	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5876B2

Deuteranopia (green-blind)

#5270AD

Tritanopia (blue-blind)

#4F7B86

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #666eaf;
/* rgb */ color: rgb(102, 110, 175);
/* oklch */ color: oklch(56.0% 0.101 277.3);

Tailwind

colors: {
  custom: {
    50: '#9597c7',
    500: '#666eaf',
    950: '#000000',
  },
}

SCSS

$custom: #666eaf;
$custom-light: #9597c7;
$custom-dark: #000000;

JSON

{
  "hex": "#666eaf",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 175
  },
  "hsl": {
    "h": 233.425,
    "s": 31.33,
    "l": 54.314
  },
  "oklch": {
    "l": 0.55993,
    "c": 0.1009,
    "h": 277.3
  },
  "luminance": 0.17072
}

Semantic roles & 50–950 ramp

primary

#666EAF

secondary

#C8C4A9

accent

#BC60C8

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #666EAF

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

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