#3674CB#3674CB

#3674CB is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.3% C 0.149 H 257.5°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3674CB
RGB	rgb(54, 116, 203)
HSL	hsl(215, 59%, 50%)
HSV	hsv(215, 73%, 80%)
CMYK	cmyk(73.4%, 42.9%, 0%, 20.4%)
CIE-LAB	lab(48.99, 9.86, -50.92)
CIE-LCH	lch(48.99, 51.86, 280.96°)
OKLab	oklab(56.3% -0.0324 -0.1456)
OKLCH	oklch(56.3% 0.149 257.5)
XYZ	xyz(18.5423, 17.5848, 58.9053)
Luminance	0.1759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3674CB #CB8D36

analogous

#36BECB #3674CB #4336CB

triadic

#3674CB #CB3674 #74CB36

tetradic

#3674CB #CB36BE #CB8D36 #36CB43

square

#3674CB #CB36BE #CB8D36 #36CB43

split-complementary

#3674CB #CB4336 #BECB36

monochromatic

#1C3D6B #28589C #3674CB #6796D8 #97B7E4

Accessibility & contrast

On white

4.65

#3674CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#3674CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3674CB

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3674CB	#FFFFFF	#000000	##FFFFFF
##3674CB	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#497CCE

Deuteranopia (green-blind)

#2E6EC9

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3674cb;
/* rgb */ color: rgb(54, 116, 203);
/* oklch */ color: oklch(56.3% 0.149 257.5);

Tailwind

colors: {
  custom: {
    50: '#809bdb',
    500: '#3674cb',
    950: '#000000',
  },
}

SCSS

$custom: #3674cb;
$custom-light: #809bdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3674cb",
  "rgb": {
    "r": 54,
    "g": 116,
    "b": 203
  },
  "hsl": {
    "h": 215.034,
    "s": 58.893,
    "l": 50.392
  },
  "oklch": {
    "l": 0.56302,
    "c": 0.1492,
    "h": 257.5
  },
  "luminance": 0.17587
}

Semantic roles & 50–950 ramp

primary

#3674CB

secondary

#D0B48D

accent

#A146E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3674CB

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

Preview Lab → · Contrast checker → · Palette generator →