#3668B3#3668B3

#3668B3 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.1% C 0.131 H 258.4°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#3668B3
RGB	rgb(54, 104, 179)
HSL	hsl(216, 54%, 46%)
HSV	hsv(216, 70%, 70%)
CMYK	cmyk(69.8%, 41.9%, 0%, 29.8%)
CIE-LAB	lab(44.14, 8.57, -44.79)
CIE-LCH	lch(44.14, 45.60, 280.83°)
OKLab	oklab(52.09% -0.0262 -0.1278)
OKLCH	oklch(52.09% 0.131 258.4)
XYZ	xyz(14.6054, 13.9381, 44.5597)
Luminance	0.1394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3668B3 #B38136

analogous

#36A6B3 #3668B3 #4236B3

triadic

#3668B3 #B33668 #68B336

tetradic

#3668B3 #B336A6 #B38136 #36B342

square

#3668B3 #B336A6 #B38136 #36B342

split-complementary

#3668B3 #B34236 #A6B336

monochromatic

#1A3155 #284D84 #3668B3 #5988CD #88A9DB

Accessibility & contrast

On white

5.54

#3668B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#3668B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3668B3

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3668B3	#FFFFFF	#000000	##FFFFFF
##3668B3	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456FB6

Deuteranopia (green-blind)

#3063B1

Tritanopia (blue-blind)

#007985

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3668b3;
/* rgb */ color: rgb(54, 104, 179);
/* oklch */ color: oklch(52.1% 0.131 258.4);

Tailwind

colors: {
  custom: {
    50: '#7c92ca',
    500: '#3668b3',
    950: '#000000',
  },
}

SCSS

$custom: #3668b3;
$custom-light: #7c92ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3668b3",
  "rgb": {
    "r": 54,
    "g": 104,
    "b": 179
  },
  "hsl": {
    "h": 216,
    "s": 53.648,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52094,
    "c": 0.13051,
    "h": 258.4
  },
  "luminance": 0.1394
}

Semantic roles & 50–950 ramp

primary

#3668B3

secondary

#C5A980

accent

#A34BDD

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0D13

muted

#7C7D82

Preview Lab

Preview with #3668B3

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

Preview Lab → · Contrast checker → · Palette generator →