#3F74D2#3F74D2

#3F74D2 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.1% C 0.156 H 260.9°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F74D2
RGB	rgb(63, 116, 210)
HSL	hsl(218, 62%, 54%)
HSV	hsv(218, 70%, 82%)
CMYK	cmyk(70%, 44.8%, 0%, 17.6%)
CIE-LAB	lab(49.74, 13.67, -53.69)
CIE-LCH	lch(49.74, 55.40, 284.29°)
OKLab	oklab(57.11% -0.0246 -0.1537)
OKLCH	oklch(57.11% 0.156 260.9)
XYZ	xyz(19.9240, 18.1986, 63.4229)
Luminance	0.1820 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F74D2 #D29D3F

analogous

#3FBDD2 #3F74D2 #533FD2

triadic

#3F74D2 #D23F74 #74D23F

tetradic

#3F74D2 #D23FBD #D29D3F #3FD253

square

#3F74D2 #D23FBD #D29D3F #3FD253

split-complementary

#3F74D2 #D2533F #BDD23F

monochromatic

#1D3E7A #2858AC #3F74D2 #7198DE #A2BCE9

Accessibility & contrast

On white

4.53

#3F74D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#3F74D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F74D2

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F74D2	#FFFFFF	#000000	##000000
##3F74D2	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#457ED6

Deuteranopia (green-blind)

#2870D0

Tritanopia (blue-blind)

#008A99

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3f74d2;
/* rgb */ color: rgb(63, 116, 210);
/* oklch */ color: oklch(57.1% 0.156 260.9);

Tailwind

colors: {
  custom: {
    50: '#859be0',
    500: '#3f74d2',
    950: '#000000',
  },
}

SCSS

$custom: #3f74d2;
$custom-light: #859be0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f74d2",
  "rgb": {
    "r": 63,
    "g": 116,
    "b": 210
  },
  "hsl": {
    "h": 218.367,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.57106,
    "c": 0.15563,
    "h": 260.9
  },
  "luminance": 0.18201
}

Semantic roles & 50–950 ramp

primary

#3F74D2

secondary

#D6BF97

accent

#AB43E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F74D2

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

Preview Lab → · Contrast checker → · Palette generator →