#3974D2#3974D2

#3974D2 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 56.9% C 0.158 H 259.4°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#3974D2
RGB	rgb(57, 116, 210)
HSL	hsl(217, 63%, 52%)
HSV	hsv(217, 73%, 82%)
CMYK	cmyk(72.9%, 44.8%, 0%, 17.6%)
CIE-LAB	lab(49.51, 12.83, -54.07)
CIE-LCH	lch(49.51, 55.57, 283.35°)
OKLab	oklab(56.87% -0.029 -0.1549)
OKLCH	oklch(56.87% 0.158 259.4)
XYZ	xyz(19.5614, 18.0116, 63.4059)
Luminance	0.1801 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3974D2 #D29739

analogous

#39C0D2 #3974D2 #4B39D2

triadic

#3974D2 #D23974 #74D239

tetradic

#3974D2 #D239C0 #D29739 #39D24B

square

#3974D2 #D239C0 #D29739 #39D24B

split-complementary

#3974D2 #D24B39 #C0D239

monochromatic

#1B3E76 #2658A8 #3974D2 #6B97DD #9DBAE9

Accessibility & contrast

On white

4.56

#3974D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#3974D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3974D2

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3974D2	#FFFFFF	#000000	##000000
##3974D2	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#447DD6

Deuteranopia (green-blind)

#256FD0

Tritanopia (blue-blind)

#008A99

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3974d2;
/* rgb */ color: rgb(57, 116, 210);
/* oklch */ color: oklch(56.9% 0.158 259.4);

Tailwind

colors: {
  custom: {
    50: '#839be0',
    500: '#3974d2',
    950: '#000000',
  },
}

SCSS

$custom: #3974d2;
$custom-light: #839be0;
$custom-dark: #000000;

JSON

{
  "hex": "#3974d2",
  "rgb": {
    "r": 57,
    "g": 116,
    "b": 210
  },
  "hsl": {
    "h": 216.863,
    "s": 62.963,
    "l": 52.353
  },
  "oklch": {
    "l": 0.56869,
    "c": 0.15755,
    "h": 259.4
  },
  "luminance": 0.18014
}

Semantic roles & 50–950 ramp

primary

#3974D2

secondary

#D5BB92

accent

#A742E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3974D2

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

Preview Lab → · Contrast checker → · Palette generator →