#668BCB#668BCB

#668BCB is a light, moderate blue. Relative luminance 0.256; OKLCH L 63.6% C 0.105 H 260.9°. Best body text is #000000 at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#668BCB
RGB	rgb(102, 139, 203)
HSL	hsl(218, 49%, 60%)
HSV	hsv(218, 50%, 80%)
CMYK	cmyk(49.8%, 31.5%, 0%, 20.4%)
CIE-LAB	lab(57.66, 4.95, -37.06)
CIE-LCH	lch(57.66, 37.38, 277.61°)
OKLab	oklab(63.64% -0.0166 -0.1041)
OKLCH	oklch(63.64% 0.105 260.9)
XYZ	xyz(25.4880, 25.6001, 60.0866)
Luminance	0.2560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668BCB #CBA666

analogous

#66BDCB #668BCB #7466CB

triadic

#668BCB #CB668B #8BCB66

tetradic

#668BCB #CB66BD #CBA666 #66CB74

square

#668BCB #CB66BD #CBA666 #66CB74

split-complementary

#668BCB #CB7466 #BDCB66

monochromatic

#2E4F88 #3E6AB6 #668BCB #94AEDB #C1D0EA

Accessibility & contrast

On white

3.43

#668BCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.12

#668BCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668BCB

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668BCB	#FFFFFF	#000000	##000000
##668BCB	1.00	3.43	6.12	6.12
#FFFFFF	3.43	1.00	21.00	21.00
#000000	6.12	21.00	1.00	1.00
##000000	6.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7290CE

Deuteranopia (green-blind)

#6786CA

Tritanopia (blue-blind)

#3999A2

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #668bcb;
/* rgb */ color: rgb(102, 139, 203);
/* oklch */ color: oklch(63.6% 0.105 260.9);

Tailwind

colors: {
  custom: {
    50: '#97acdb',
    500: '#668bcb',
    950: '#000000',
  },
}

SCSS

$custom: #668bcb;
$custom-light: #97acdb;
$custom-dark: #000000;

JSON

{
  "hex": "#668bcb",
  "rgb": {
    "r": 102,
    "g": 139,
    "b": 203
  },
  "hsl": {
    "h": 218.02,
    "s": 49.268,
    "l": 59.804
  },
  "oklch": {
    "l": 0.63636,
    "c": 0.10545,
    "h": 260.9
  },
  "luminance": 0.25602
}

Semantic roles & 50–950 ramp

primary

#668BCB

secondary

#DACCB3

accent

#A64FD9

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #668BCB

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

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