#3B72CB#3B72CB

#3B72CB is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.1% C 0.150 H 259.6°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3B72CB
RGB	rgb(59, 114, 203)
HSL	hsl(217, 58%, 51%)
HSV	hsv(217, 71%, 80%)
CMYK	cmyk(70.9%, 43.8%, 0%, 20.4%)
CIE-LAB	lab(48.60, 11.80, -51.52)
CIE-LCH	lch(48.60, 52.86, 282.91°)
OKLab	oklab(56.05% -0.0271 -0.1474)
OKLCH	oklch(56.05% 0.15 259.6)
XYZ	xyz(18.5966, 17.2743, 58.8425)
Luminance	0.1728 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B72CB #CB943B

analogous

#3BBACB #3B72CB #4C3BCB

triadic

#3B72CB #CB3B72 #72CB3B

tetradic

#3B72CB #CB3BBA #CB943B #3BCB4C

square

#3B72CB #CB3BBA #CB943B #3BCB4C

split-complementary

#3B72CB #CB4C3B #BACB3B

monochromatic

#1D3C6E #2A579F #3B72CB #6B95D8 #9CB8E5

Accessibility & contrast

On white

4.71

#3B72CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#3B72CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B72CB

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B72CB	#FFFFFF	#000000	##FFFFFF
##3B72CB	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#467BCE

Deuteranopia (green-blind)

#2C6DC9

Tritanopia (blue-blind)

#008794

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3b72cb;
/* rgb */ color: rgb(59, 114, 203);
/* oklch */ color: oklch(56.1% 0.150 259.6);

Tailwind

colors: {
  custom: {
    50: '#829adb',
    500: '#3b72cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b72cb;
$custom-light: #829adb;
$custom-dark: #000000;

JSON

{
  "hex": "#3b72cb",
  "rgb": {
    "r": 59,
    "g": 114,
    "b": 203
  },
  "hsl": {
    "h": 217.083,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.56054,
    "c": 0.14985,
    "h": 259.6
  },
  "luminance": 0.17276
}

Semantic roles & 50–950 ramp

primary

#3B72CB

secondary

#D1B891

accent

#A647E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3B72CB

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

Preview Lab → · Contrast checker → · Palette generator →