#3669BC#3669BC

#3669BC is a mid, vivid blue. Relative luminance 0.145; OKLCH L 52.9% C 0.142 H 259.7°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#3669BC
RGB	rgb(54, 105, 188)
HSL	hsl(217, 55%, 47%)
HSV	hsv(217, 71%, 74%)
CMYK	cmyk(71.3%, 44.1%, 0%, 26.3%)
CIE-LAB	lab(44.96, 11.25, -48.72)
CIE-LCH	lch(44.96, 50.00, 283.00°)
OKLab	oklab(52.9% -0.0254 -0.1394)
OKLCH	oklch(52.9% 0.142 259.7)
XYZ	xyz(15.6467, 14.5166, 49.5446)
Luminance	0.1452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3669BC #BC8936

analogous

#36ACBC #3669BC #4636BC

triadic

#3669BC #BC3669 #69BC36

tetradic

#3669BC #BC36AC #BC8936 #36BC46

square

#3669BC #BC36AC #BC8936 #36BC46

split-complementary

#3669BC #BC4636 #ACBC36

monochromatic

#1B345D #284E8C #3669BC #5E8AD1 #8EADDF

Accessibility & contrast

On white

5.38

#3669BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#3669BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3669BC

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3669BC	#FFFFFF	#000000	##FFFFFF
##3669BC	1.00	5.38	3.90	5.38
#FFFFFF	5.38	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4071BF

Deuteranopia (green-blind)

#2765BA

Tritanopia (blue-blind)

#007C89

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3669bc;
/* rgb */ color: rgb(54, 105, 188);
/* oklch */ color: oklch(52.9% 0.142 259.7);

Tailwind

colors: {
  custom: {
    50: '#7d93d1',
    500: '#3669bc',
    950: '#000000',
  },
}

SCSS

$custom: #3669bc;
$custom-light: #7d93d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3669bc",
  "rgb": {
    "r": 54,
    "g": 105,
    "b": 188
  },
  "hsl": {
    "h": 217.164,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.52901,
    "c": 0.14167,
    "h": 259.7
  },
  "luminance": 0.14518
}

Semantic roles & 50–950 ramp

primary

#3669BC

secondary

#C9AF85

accent

#A649DF

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3669BC

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

Preview Lab → · Contrast checker → · Palette generator →