#3670CF#3670CF

#3670CF is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.7% C 0.159 H 259.8°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3670CF
RGB	rgb(54, 112, 207)
HSL	hsl(217, 61%, 51%)
HSV	hsv(217, 74%, 81%)
CMYK	cmyk(73.9%, 45.9%, 0%, 18.8%)
CIE-LAB	lab(48.10, 13.85, -54.62)
CIE-LCH	lch(48.10, 56.35, 284.23°)
OKLab	oklab(55.69% -0.0282 -0.1566)
OKLCH	oklch(55.69% 0.159 259.8)
XYZ	xyz(18.5739, 16.8755, 61.2978)
Luminance	0.1688 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3670CF #CF9536

analogous

#36BCCF #3670CF #4836CF

triadic

#3670CF #CF3670 #70CF36

tetradic

#3670CF #CF36BC #CF9536 #36CF48

square

#3670CF #CF36BC #CF9536 #36CF48

split-complementary

#3670CF #CF4836 #BCCF36

monochromatic

#1B3B70 #2755A1 #3670CF #6793DB #99B6E7

Accessibility & contrast

On white

4.80

#3670CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#3670CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3670CF

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3670CF	#FFFFFF	#000000	##FFFFFF
##3670CF	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E7AD3

Deuteranopia (green-blind)

#1B6CCD

Tritanopia (blue-blind)

#008695

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3670cf;
/* rgb */ color: rgb(54, 112, 207);
/* oklch */ color: oklch(55.7% 0.159 259.8);

Tailwind

colors: {
  custom: {
    50: '#8198de',
    500: '#3670cf',
    950: '#000000',
  },
}

SCSS

$custom: #3670cf;
$custom-light: #8198de;
$custom-dark: #000000;

JSON

{
  "hex": "#3670cf",
  "rgb": {
    "r": 54,
    "g": 112,
    "b": 207
  },
  "hsl": {
    "h": 217.255,
    "s": 61.446,
    "l": 51.176
  },
  "oklch": {
    "l": 0.55695,
    "c": 0.15913,
    "h": 259.8
  },
  "luminance": 0.16878
}

Semantic roles & 50–950 ramp

primary

#3670CF

secondary

#D2B98F

accent

#A743E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3670CF

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

Preview Lab → · Contrast checker → · Palette generator →