#3670CB#3670CB

#3670CB is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.4% C 0.154 H 259.2°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#3670CB
RGB	rgb(54, 112, 203)
HSL	hsl(217, 59%, 50%)
HSV	hsv(217, 73%, 80%)
CMYK	cmyk(73.4%, 44.8%, 0%, 20.4%)
CIE-LAB	lab(47.86, 12.37, -52.73)
CIE-LCH	lch(47.86, 54.16, 283.20°)
OKLab	oklab(55.43% -0.0289 -0.151)
OKLCH	oklch(55.43% 0.154 259.2)
XYZ	xyz(18.0911, 16.6824, 58.7549)
Luminance	0.1668 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3670CB #CB9136

analogous

#36BBCB #3670CB #4636CB

triadic

#3670CB #CB3670 #70CB36

tetradic

#3670CB #CB36BB #CB9136 #36CB46

square

#3670CB #CB36BB #CB9136 #36CB46

split-complementary

#3670CB #CB4636 #BBCB36

monochromatic

#1C3B6B #28559C #3670CB #6793D8 #97B5E4

Accessibility & contrast

On white

4.84

#3670CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#3670CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3670CB

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3670CB	#FFFFFF	#000000	##FFFFFF
##3670CB	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4279CE

Deuteranopia (green-blind)

#236BC9

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3670cb;
/* rgb */ color: rgb(54, 112, 203);
/* oklch */ color: oklch(55.4% 0.154 259.2);

Tailwind

colors: {
  custom: {
    50: '#8098db',
    500: '#3670cb',
    950: '#000000',
  },
}

SCSS

$custom: #3670cb;
$custom-light: #8098db;
$custom-dark: #000000;

JSON

{
  "hex": "#3670cb",
  "rgb": {
    "r": 54,
    "g": 112,
    "b": 203
  },
  "hsl": {
    "h": 216.644,
    "s": 58.893,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55427,
    "c": 0.15377,
    "h": 259.2
  },
  "luminance": 0.16684
}

Semantic roles & 50–950 ramp

primary

#3670CB

secondary

#D0B68D

accent

#A546E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3670CB

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

Preview Lab → · Contrast checker → · Palette generator →