#3F72B2#3F72B2

#3F72B2 is a mid, moderate cyan. Relative luminance 0.163; OKLCH L 54.7% C 0.115 H 255.1°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F72B2
RGB	rgb(63, 114, 178)
HSL	hsl(213, 48%, 47%)
HSV	hsv(213, 65%, 70%)
CMYK	cmyk(64.6%, 36%, 0%, 30.2%)
CIE-LAB	lab(47.37, 3.50, -39.06)
CIE-LCH	lch(47.37, 39.22, 275.12°)
OKLab	oklab(54.69% -0.0296 -0.1108)
OKLCH	oklch(54.69% 0.115 255.1)
XYZ	xyz(16.1002, 16.3042, 44.4094)
Luminance	0.1631 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F72B2 #B27F3F

analogous

#3FACB2 #3F72B2 #453FB2

triadic

#3F72B2 #B23F72 #72B23F

tetradic

#3F72B2 #B23FAC #B27F3F #3FB245

square

#3F72B2 #B23FAC #B27F3F #3FB245

split-complementary

#3F72B2 #B2453F #ACB23F

monochromatic

#1F3858 #2F5585 #3F72B2 #6691C9 #93B2D9

Accessibility & contrast

On white

4.93

#3F72B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#3F72B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F72B2

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F72B2	#FFFFFF	#000000	##FFFFFF
##3F72B2	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5676B5

Deuteranopia (green-blind)

#466BB1

Tritanopia (blue-blind)

#008189

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f72b2;
/* rgb */ color: rgb(63, 114, 178);
/* oklch */ color: oklch(54.7% 0.115 255.1);

Tailwind

colors: {
  custom: {
    50: '#7f9ac9',
    500: '#3f72b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f72b2;
$custom-light: #7f9ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f72b2",
  "rgb": {
    "r": 63,
    "g": 114,
    "b": 178
  },
  "hsl": {
    "h": 213.391,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.54689,
    "c": 0.11467,
    "h": 255.1
  },
  "luminance": 0.16306
}

Semantic roles & 50–950 ramp

primary

#3F72B2

secondary

#C4AA89

accent

#9C50D7

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F72B2

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

Preview Lab → · Contrast checker → · Palette generator →