#3669B8#3669B8

#3669B8 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.6% C 0.136 H 258.9°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3669B8
RGB	rgb(54, 105, 184)
HSL	hsl(216, 55%, 47%)
HSV	hsv(216, 71%, 72%)
CMYK	cmyk(70.7%, 42.9%, 0%, 27.8%)
CIE-LAB	lab(44.73, 9.78, -46.78)
CIE-LCH	lch(44.73, 47.79, 281.80°)
OKLab	oklab(52.64% -0.0262 -0.1337)
OKLCH	oklch(52.64% 0.136 258.9)
XYZ	xyz(15.2215, 14.3465, 47.3051)
Luminance	0.1435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3669B8 #B88536

analogous

#36AAB8 #3669B8 #4436B8

triadic

#3669B8 #B83669 #69B836

tetradic

#3669B8 #B836AA #B88536 #36B844

square

#3669B8 #B836AA #B88536 #36B844

split-complementary

#3669B8 #B84436 #AAB836

monochromatic

#1A3359 #284E89 #3669B8 #5C89CF #8BABDD

Accessibility & contrast

On white

5.43

#3669B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3669B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3669B8

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3669B8	#FFFFFF	#000000	##FFFFFF
##3669B8	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4370BB

Deuteranopia (green-blind)

#2D64B6

Tritanopia (blue-blind)

#007B87

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3669b8;
/* rgb */ color: rgb(54, 105, 184);
/* oklch */ color: oklch(52.6% 0.136 258.9);

Tailwind

colors: {
  custom: {
    50: '#7d93ce',
    500: '#3669b8',
    950: '#000000',
  },
}

SCSS

$custom: #3669b8;
$custom-light: #7d93ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3669b8",
  "rgb": {
    "r": 54,
    "g": 105,
    "b": 184
  },
  "hsl": {
    "h": 216.462,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.52639,
    "c": 0.13621,
    "h": 258.9
  },
  "luminance": 0.14348
}

Semantic roles & 50–950 ramp

primary

#3669B8

secondary

#C7AC82

accent

#A44ADE

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3669B8

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

Preview Lab → · Contrast checker → · Palette generator →