#3669B3#3669B3

#3669B3 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.3% C 0.129 H 257.9°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#3669B3
RGB	rgb(54, 105, 179)
HSL	hsl(216, 54%, 46%)
HSV	hsv(216, 70%, 70%)
CMYK	cmyk(69.8%, 41.3%, 0%, 29.8%)
CIE-LAB	lab(44.43, 7.94, -44.33)
CIE-LCH	lch(44.43, 45.03, 280.15°)
OKLab	oklab(52.32% -0.0272 -0.1265)
OKLCH	oklch(52.32% 0.129 257.9)
XYZ	xyz(14.7066, 14.1406, 44.5934)
Luminance	0.1414 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3669B3 #B38036

analogous

#36A7B3 #3669B3 #4136B3

triadic

#3669B3 #B33669 #69B336

tetradic

#3669B3 #B336A7 #B38036 #36B341

square

#3669B3 #B336A7 #B38036 #36B341

split-complementary

#3669B3 #B34136 #A7B336

monochromatic

#1A3255 #284D84 #3669B3 #5988CD #88AADB

Accessibility & contrast

On white

5.49

#3669B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#3669B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3669B3

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3669B3	#FFFFFF	#000000	##FFFFFF
##3669B3	1.00	5.49	3.83	5.49
#FFFFFF	5.49	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#466FB6

Deuteranopia (green-blind)

#3264B1

Tritanopia (blue-blind)

#007A85

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3669b3;
/* rgb */ color: rgb(54, 105, 179);
/* oklch */ color: oklch(52.3% 0.129 257.9);

Tailwind

colors: {
  custom: {
    50: '#7c93ca',
    500: '#3669b3',
    950: '#000000',
  },
}

SCSS

$custom: #3669b3;
$custom-light: #7c93ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3669b3",
  "rgb": {
    "r": 54,
    "g": 105,
    "b": 179
  },
  "hsl": {
    "h": 215.52,
    "s": 53.648,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52319,
    "c": 0.12937,
    "h": 257.9
  },
  "luminance": 0.14142
}

Semantic roles & 50–950 ramp

primary

#3669B3

secondary

#C5A980

accent

#A14BDD

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3669B3

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

Preview Lab → · Contrast checker → · Palette generator →