#3671CF#3671CF

#3671CF is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.9% C 0.158 H 259.4°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3671CF
RGB	rgb(54, 113, 207)
HSL	hsl(217, 61%, 51%)
HSV	hsv(217, 74%, 81%)
CMYK	cmyk(73.9%, 45.4%, 0%, 18.8%)
CIE-LAB	lab(48.38, 13.22, -54.17)
CIE-LCH	lch(48.38, 55.76, 283.71°)
OKLab	oklab(55.91% -0.029 -0.1553)
OKLCH	oklch(55.91% 0.158 259.4)
XYZ	xyz(18.6848, 17.0974, 61.3348)
Luminance	0.1710 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3671CF #CF9436

analogous

#36BDCF #3671CF #4736CF

triadic

#3671CF #CF3671 #71CF36

tetradic

#3671CF #CF36BD #CF9436 #36CF47

square

#3671CF #CF36BD #CF9436 #36CF47

split-complementary

#3671CF #CF4736 #BDCF36

monochromatic

#1B3C70 #2756A1 #3671CF #6794DB #99B7E7

Accessibility & contrast

On white

4.75

#3671CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3671CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3671CF

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3671CF	#FFFFFF	#000000	##FFFFFF
##3671CF	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#407AD3

Deuteranopia (green-blind)

#1F6CCD

Tritanopia (blue-blind)

#008796

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3671cf;
/* rgb */ color: rgb(54, 113, 207);
/* oklch */ color: oklch(55.9% 0.158 259.4);

Tailwind

colors: {
  custom: {
    50: '#8199de',
    500: '#3671cf',
    950: '#000000',
  },
}

SCSS

$custom: #3671cf;
$custom-light: #8199de;
$custom-dark: #000000;

JSON

{
  "hex": "#3671cf",
  "rgb": {
    "r": 54,
    "g": 113,
    "b": 207
  },
  "hsl": {
    "h": 216.863,
    "s": 61.446,
    "l": 51.176
  },
  "oklch": {
    "l": 0.55911,
    "c": 0.15796,
    "h": 259.4
  },
  "luminance": 0.171
}

Semantic roles & 50–950 ramp

primary

#3671CF

secondary

#D2B88F

accent

#A643E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3671CF

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

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