#669BB3#669BB3

#669BB3 is a light, moderate cyan. Relative luminance 0.295; OKLCH L 66.1% C 0.067 H 228.3°. Best body text is #000000 at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#669BB3
RGB	rgb(102, 155, 179)
HSL	hsl(199, 34%, 55%)
HSV	hsv(199, 43%, 70%)
CMYK	cmyk(43%, 13.4%, 0%, 29.8%)
CIE-LAB	lab(61.24, -11.14, -17.98)
CIE-LCH	lch(61.24, 21.15, 238.22°)
OKLab	oklab(66.14% -0.0443 -0.0496)
OKLCH	oklch(66.14% 0.067 228.3)
XYZ	xyz(25.3347, 29.5204, 47.0021)
Luminance	0.2952 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669BB3 #B37E66

analogous

#66B3A4 #669BB3 #6675B3

triadic

#669BB3 #B3669B #9BB366

tetradic

#669BB3 #A466B3 #B37E66 #75B366

square

#669BB3 #A466B3 #B37E66 #75B366

split-complementary

#669BB3 #B36675 #B3A466

monochromatic

#35596A #497C93 #669BB3 #8FB6C7 #B8D0DC

Accessibility & contrast

On white

3.04

#669BB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.90

#669BB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #669BB3

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669BB3	#FFFFFF	#000000	##000000
##669BB3	1.00	3.04	6.90	6.90
#FFFFFF	3.04	1.00	21.00	21.00
#000000	6.90	21.00	1.00	1.00
##000000	6.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F99B4

Deuteranopia (green-blind)

#8390B3

Tritanopia (blue-blind)

#46A2A3

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #669bb3;
/* rgb */ color: rgb(102, 155, 179);
/* oklch */ color: oklch(66.1% 0.067 228.3);

Tailwind

colors: {
  custom: {
    50: '#95b8c9',
    500: '#669bb3',
    950: '#000000',
  },
}

SCSS

$custom: #669bb3;
$custom-light: #95b8c9;
$custom-dark: #000000;

JSON

{
  "hex": "#669bb3",
  "rgb": {
    "r": 102,
    "g": 155,
    "b": 179
  },
  "hsl": {
    "h": 198.701,
    "s": 33.624,
    "l": 55.098
  },
  "oklch": {
    "l": 0.66136,
    "c": 0.0665,
    "h": 228.3
  },
  "luminance": 0.29522
}

Semantic roles & 50–950 ramp

primary

#669BB3

secondary

#CBB4AA

accent

#805ECA

background

#F9FBFC

surface

#F2F6F8

border

#CCD0D1

text

#0E1113

muted

#7E8082

Preview Lab

Preview with #669BB3

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

Preview Lab → · Contrast checker → · Palette generator →