#3668B2#3668B2

#3668B2 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.0% C 0.129 H 258.2°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#3668B2
RGB	rgb(54, 104, 178)
HSL	hsl(216, 53%, 45%)
HSV	hsv(216, 70%, 70%)
CMYK	cmyk(69.7%, 41.6%, 0%, 30.2%)
CIE-LAB	lab(44.09, 8.20, -44.30)
CIE-LCH	lch(44.09, 45.05, 280.49°)
OKLab	oklab(52.03% -0.0264 -0.1264)
OKLCH	oklch(52.03% 0.129 258.2)
XYZ	xyz(14.5046, 13.8977, 44.0290)
Luminance	0.1390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3668B2 #B28036

analogous

#36A6B2 #3668B2 #4236B2

triadic

#3668B2 #B23668 #68B236

tetradic

#3668B2 #B236A6 #B28036 #36B242

square

#3668B2 #B236A6 #B28036 #36B242

split-complementary

#3668B2 #B24236 #A6B236

monochromatic

#1A3154 #284D83 #3668B2 #5987CD #88A9DB

Accessibility & contrast

On white

5.56

#3668B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#3668B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3668B2

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3668B2	#FFFFFF	#000000	##FFFFFF
##3668B2	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456EB5

Deuteranopia (green-blind)

#3163B0

Tritanopia (blue-blind)

#007984

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3668b2;
/* rgb */ color: rgb(54, 104, 178);
/* oklch */ color: oklch(52.0% 0.129 258.2);

Tailwind

colors: {
  custom: {
    50: '#7b92c9',
    500: '#3668b2',
    950: '#000000',
  },
}

SCSS

$custom: #3668b2;
$custom-light: #7b92c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3668b2",
  "rgb": {
    "r": 54,
    "g": 104,
    "b": 178
  },
  "hsl": {
    "h": 215.806,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.5203,
    "c": 0.12915,
    "h": 258.2
  },
  "luminance": 0.13899
}

Semantic roles & 50–950 ramp

primary

#3668B2

secondary

#C5A97F

accent

#A24BDD

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0D13

muted

#7C7D82

Preview Lab

Preview with #3668B2

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

Preview Lab → · Contrast checker → · Palette generator →