#3974CE#3974CE

#3974CE is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.6% C 0.152 H 258.7°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#3974CE
RGB	rgb(57, 116, 206)
HSL	hsl(216, 60%, 52%)
HSV	hsv(216, 72%, 81%)
CMYK	cmyk(72.3%, 43.7%, 0%, 19.2%)
CIE-LAB	lab(49.27, 11.37, -52.17)
CIE-LCH	lch(49.27, 53.40, 282.29°)
OKLab	oklab(56.61% -0.0297 -0.1493)
OKLCH	oklch(56.61% 0.152 258.7)
XYZ	xyz(19.0693, 17.8148, 60.8142)
Luminance	0.1782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3974CE #CE9339

analogous

#39BECE #3974CE #4939CE

triadic

#3974CE #CE3974 #74CE39

tetradic

#3974CE #CE39BE #CE9339 #39CE49

square

#3974CE #CE39BE #CE9339 #39CE49

split-complementary

#3974CE #CE4939 #BECE39

monochromatic

#1C3D71 #2858A2 #3974CE #6A96DA #9BB9E6

Accessibility & contrast

On white

4.60

#3974CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#3974CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3974CE

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

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

Color blindness preview

Protanopia (red-blind)

#477CD1

Deuteranopia (green-blind)

#2B6FCC

Tritanopia (blue-blind)

#008997

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3974ce;
/* rgb */ color: rgb(57, 116, 206);
/* oklch */ color: oklch(56.6% 0.152 258.7);

Tailwind

colors: {
  custom: {
    50: '#829bdd',
    500: '#3974ce',
    950: '#000000',
  },
}

SCSS

$custom: #3974ce;
$custom-light: #829bdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3974ce",
  "rgb": {
    "r": 57,
    "g": 116,
    "b": 206
  },
  "hsl": {
    "h": 216.242,
    "s": 60.324,
    "l": 51.569
  },
  "oklch": {
    "l": 0.56606,
    "c": 0.15222,
    "h": 258.7
  },
  "luminance": 0.17817
}

Semantic roles & 50–950 ramp

primary

#3974CE

secondary

#D2B891

accent

#A444E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3974CE

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

Preview Lab → · Contrast checker → · Palette generator →