#3667B3#3667B3

#3667B3 is a mid, vivid blue. Relative luminance 0.137; OKLCH L 51.9% C 0.132 H 258.9°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#3667B3
RGB	rgb(54, 103, 179)
HSL	hsl(216, 54%, 46%)
HSV	hsv(216, 70%, 70%)
CMYK	cmyk(69.8%, 42.5%, 0%, 29.8%)
CIE-LAB	lab(43.85, 9.20, -45.25)
CIE-LCH	lch(43.85, 46.18, 281.50°)
OKLab	oklab(51.87% -0.0253 -0.1292)
OKLCH	oklch(51.87% 0.132 258.9)
XYZ	xyz(14.5053, 13.7379, 44.5263)
Luminance	0.1374 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3667B3 #B38236

analogous

#36A5B3 #3667B3 #4336B3

triadic

#3667B3 #B33667 #67B336

tetradic

#3667B3 #B336A5 #B38236 #36B343

square

#3667B3 #B336A5 #B38236 #36B343

split-complementary

#3667B3 #B34336 #A5B336

monochromatic

#1A3155 #284C84 #3667B3 #5987CD #88A9DB

Accessibility & contrast

On white

5.60

#3667B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#3667B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3667B3

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3667B3	#FFFFFF	#000000	##FFFFFF
##3667B3	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#436EB6

Deuteranopia (green-blind)

#2E62B1

Tritanopia (blue-blind)

#007984

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3667b3;
/* rgb */ color: rgb(54, 103, 179);
/* oklch */ color: oklch(51.9% 0.132 258.9);

Tailwind

colors: {
  custom: {
    50: '#7c91ca',
    500: '#3667b3',
    950: '#000000',
  },
}

SCSS

$custom: #3667b3;
$custom-light: #7c91ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3667b3",
  "rgb": {
    "r": 54,
    "g": 103,
    "b": 179
  },
  "hsl": {
    "h": 216.48,
    "s": 53.648,
    "l": 45.686
  },
  "oklch": {
    "l": 0.5187,
    "c": 0.13168,
    "h": 258.9
  },
  "luminance": 0.13739
}

Semantic roles & 50–950 ramp

primary

#3667B3

secondary

#C5AA80

accent

#A44BDD

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3667B3

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

Preview Lab → · Contrast checker → · Palette generator →