#3974C7#3974C7

#3974C7 is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.2% C 0.143 H 257.4°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3974C7
RGB	rgb(57, 116, 199)
HSL	hsl(215, 56%, 50%)
HSV	hsv(215, 71%, 78%)
CMYK	cmyk(71.4%, 41.7%, 0%, 22%)
CIE-LAB	lab(48.86, 8.81, -48.82)
CIE-LCH	lch(48.86, 49.61, 280.23°)
OKLab	oklab(56.16% -0.0311 -0.1395)
OKLCH	oklch(56.16% 0.143 257.4)
XYZ	xyz(18.2378, 17.4822, 56.4350)
Luminance	0.1748 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3974C7 #C78C39

analogous

#39BBC7 #3974C7 #4539C7

triadic

#3974C7 #C73974 #74C739

tetradic

#3974C7 #C739BB #C78C39 #39C745

square

#3974C7 #C739BB #C78C39 #39C745

split-complementary

#3974C7 #C74539 #BBC739

monochromatic

#1D3C68 #2B5898 #3974C7 #6995D4 #98B7E2

Accessibility & contrast

On white

4.67

#3974C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#3974C7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3974C7

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3974C7	#FFFFFF	#000000	##FFFFFF
##3974C7	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C7BCA

Deuteranopia (green-blind)

#356EC5

Tritanopia (blue-blind)

#008794

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3974c7;
/* rgb */ color: rgb(57, 116, 199);
/* oklch */ color: oklch(56.2% 0.143 257.4);

Tailwind

colors: {
  custom: {
    50: '#809bd8',
    500: '#3974c7',
    950: '#000000',
  },
}

SCSS

$custom: #3974c7;
$custom-light: #809bd8;
$custom-dark: #000000;

JSON

{
  "hex": "#3974c7",
  "rgb": {
    "r": 57,
    "g": 116,
    "b": 199
  },
  "hsl": {
    "h": 215.07,
    "s": 55.906,
    "l": 50.196
  },
  "oklch": {
    "l": 0.56158,
    "c": 0.14289,
    "h": 257.4
  },
  "luminance": 0.17484
}

Semantic roles & 50–950 ramp

primary

#3974C7

secondary

#CEB38E

accent

#A149DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #3974C7

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

Preview Lab → · Contrast checker → · Palette generator →