#668BCC#668BCC

#668BCC is a light, moderate blue. Relative luminance 0.257; OKLCH L 63.7% C 0.107 H 261.2°. Best body text is #000000 at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#668BCC
RGB	rgb(102, 139, 204)
HSL	hsl(218, 50%, 60%)
HSV	hsv(218, 50%, 80%)
CMYK	cmyk(50%, 31.9%, 0%, 20%)
CIE-LAB	lab(57.70, 5.26, -37.55)
CIE-LCH	lch(57.70, 37.91, 277.97°)
OKLab	oklab(63.69% -0.0164 -0.1056)
OKLCH	oklch(63.69% 0.107 261.2)
XYZ	xyz(25.6076, 25.6479, 60.7162)
Luminance	0.2565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668BCC #CCA766

analogous

#66BECC #668BCC #7466CC

triadic

#668BCC #CC668B #8BCC66

tetradic

#668BCC #CC66BE #CCA766 #66CC74

square

#668BCC #CC66BE #CCA766 #66CC74

split-complementary

#668BCC #CC7466 #BECC66

monochromatic

#2E4F8A #3D6AB8 #668BCC #94AEDB #C2D1EB

Accessibility & contrast

On white

3.43

#668BCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.13

#668BCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668BCC

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668BCC	#FFFFFF	#000000	##000000
##668BCC	1.00	3.43	6.13	6.13
#FFFFFF	3.43	1.00	21.00	21.00
#000000	6.13	21.00	1.00	1.00
##000000	6.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7290CF

Deuteranopia (green-blind)

#6686CB

Tritanopia (blue-blind)

#3899A2

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #668bcc;
/* rgb */ color: rgb(102, 139, 204);
/* oklch */ color: oklch(63.7% 0.107 261.2);

Tailwind

colors: {
  custom: {
    50: '#97acdc',
    500: '#668bcc',
    950: '#000000',
  },
}

SCSS

$custom: #668bcc;
$custom-light: #97acdc;
$custom-dark: #000000;

JSON

{
  "hex": "#668bcc",
  "rgb": {
    "r": 102,
    "g": 139,
    "b": 204
  },
  "hsl": {
    "h": 218.235,
    "s": 50,
    "l": 60
  },
  "oklch": {
    "l": 0.63686,
    "c": 0.10682,
    "h": 261.2
  },
  "luminance": 0.2565
}

Semantic roles & 50–950 ramp

primary

#668BCC

secondary

#DBCCB3

accent

#A74EDA

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #668BCC

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

Preview Lab → · Contrast checker → · Palette generator →