#3669B9#3669B9

#3669B9 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 52.7% C 0.138 H 259.1°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#3669B9
RGB	rgb(54, 105, 185)
HSL	hsl(217, 55%, 47%)
HSV	hsv(217, 71%, 73%)
CMYK	cmyk(70.8%, 43.2%, 0%, 27.5%)
CIE-LAB	lab(44.79, 10.14, -47.26)
CIE-LCH	lch(44.79, 48.34, 282.11°)
OKLab	oklab(52.7% -0.026 -0.1351)
OKLCH	oklch(52.7% 0.138 259.1)
XYZ	xyz(15.3267, 14.3886, 47.8591)
Luminance	0.1439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3669B9 #B98636

analogous

#36ABB9 #3669B9 #4436B9

triadic

#3669B9 #B93669 #69B936

tetradic

#3669B9 #B936AB #B98636 #36B944

square

#3669B9 #B936AB #B98636 #36B944

split-complementary

#3669B9 #B94436 #ABB936

monochromatic

#1A335A #284E8A #3669B9 #5D89D0 #8CACDD

Accessibility & contrast

On white

5.42

#3669B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#3669B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3669B9

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3669B9	#FFFFFF	#000000	##FFFFFF
##3669B9	1.00	5.42	3.88	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4270BC

Deuteranopia (green-blind)

#2B64B7

Tritanopia (blue-blind)

#007C88

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3669b9;
/* rgb */ color: rgb(54, 105, 185);
/* oklch */ color: oklch(52.7% 0.138 259.1);

Tailwind

colors: {
  custom: {
    50: '#7d93ce',
    500: '#3669b9',
    950: '#000000',
  },
}

SCSS

$custom: #3669b9;
$custom-light: #7d93ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3669b9",
  "rgb": {
    "r": 54,
    "g": 105,
    "b": 185
  },
  "hsl": {
    "h": 216.641,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52704,
    "c": 0.13757,
    "h": 259.1
  },
  "luminance": 0.1439
}

Semantic roles & 50–950 ramp

primary

#3669B9

secondary

#C8AD83

accent

#A44ADE

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3669B9

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

Preview Lab → · Contrast checker → · Palette generator →