#3974D7#3974D7

#3974D7 is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.2% C 0.164 H 260.1°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3974D7
RGB	rgb(57, 116, 215)
HSL	hsl(218, 66%, 53%)
HSV	hsv(218, 73%, 84%)
CMYK	cmyk(73.5%, 46%, 0%, 15.7%)
CIE-LAB	lab(49.82, 14.67, -56.41)
CIE-LCH	lch(49.82, 58.29, 284.57°)
OKLab	oklab(57.2% -0.0281 -0.1618)
OKLCH	oklch(57.2% 0.164 260.1)
XYZ	xyz(20.1940, 18.2647, 66.7380)
Luminance	0.1827 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3974D7 #D79C39

analogous

#39C3D7 #3974D7 #4D39D7

triadic

#3974D7 #D73974 #74D739

tetradic

#3974D7 #D739C3 #D79C39 #39D74D

square

#3974D7 #D739C3 #D79C39 #39D74D

split-complementary

#3974D7 #D74D39 #C3D739

monochromatic

#193E7C #2358AF #3974D7 #6C98E1 #9FBBEC

Accessibility & contrast

On white

4.51

#3974D7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#3974D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3974D7

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3974D7	#FFFFFF	#000000	##000000
##3974D7	1.00	4.51	4.65	4.65
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#407EDB

Deuteranopia (green-blind)

#1A70D5

Tritanopia (blue-blind)

#008B9B

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3974d7;
/* rgb */ color: rgb(57, 116, 215);
/* oklch */ color: oklch(57.2% 0.164 260.1);

Tailwind

colors: {
  custom: {
    50: '#849be4',
    500: '#3974d7',
    950: '#000000',
  },
}

SCSS

$custom: #3974d7;
$custom-light: #849be4;
$custom-dark: #000000;

JSON

{
  "hex": "#3974d7",
  "rgb": {
    "r": 57,
    "g": 116,
    "b": 215
  },
  "hsl": {
    "h": 217.595,
    "s": 66.387,
    "l": 53.333
  },
  "oklch": {
    "l": 0.57202,
    "c": 0.1642,
    "h": 260.1
  },
  "luminance": 0.18267
}

Semantic roles & 50–950 ramp

primary

#3974D7

secondary

#D8BE94

accent

#AA3EE9

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3974D7

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

Preview Lab → · Contrast checker → · Palette generator →