#3957C4#3957C4

#3957C4 is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.8% C 0.174 H 267.9°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#3957C4
RGB	rgb(57, 87, 196)
HSL	hsl(227, 55%, 50%)
HSV	hsv(227, 71%, 77%)
CMYK	cmyk(70.9%, 55.6%, 0%, 23.1%)
CIE-LAB	lab(40.69, 26.20, -60.25)
CIE-LCH	lch(40.69, 65.70, 293.50°)
OKLab	oklab(49.85% -0.0064 -0.1735)
OKLCH	oklch(49.85% 0.174 267.9)
XYZ	xyz(15.0559, 11.6702, 53.6730)
Luminance	0.1167 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957C4 #C4A639

analogous

#399DC4 #3957C4 #6039C4

triadic

#3957C4 #C43957 #57C439

tetradic

#3957C4 #C4399D #C4A639 #39C460

square

#3957C4 #C4399D #C4A639 #39C460

split-complementary

#3957C4 #C46039 #9DC439

monochromatic

#1D2D65 #2B4295 #3957C4 #677FD3 #97A7E1

Accessibility & contrast

On white

6.30

#3957C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#3957C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957C4

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957C4	#FFFFFF	#000000	##FFFFFF
##3957C4	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067C8

Deuteranopia (green-blind)

#005AC2

Tritanopia (blue-blind)

#007285

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3957c4;
/* rgb */ color: rgb(57, 87, 196);
/* oklch */ color: oklch(49.8% 0.174 267.9);

Tailwind

colors: {
  custom: {
    50: '#8186d7',
    500: '#3957c4',
    950: '#000000',
  },
}

SCSS

$custom: #3957c4;
$custom-light: #8186d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3957c4",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 196
  },
  "hsl": {
    "h": 227.05,
    "s": 54.941,
    "l": 49.608
  },
  "oklch": {
    "l": 0.49847,
    "c": 0.17367,
    "h": 267.9
  },
  "luminance": 0.11672
}

Semantic roles & 50–950 ramp

primary

#3957C4

secondary

#CCBE8D

accent

#BE4ADE

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3957C4

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

Preview Lab → · Contrast checker → · Palette generator →