#3957C5#3957C5

#3957C5 is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.9% C 0.175 H 267.9°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#3957C5
RGB	rgb(57, 87, 197)
HSL	hsl(227, 55%, 50%)
HSV	hsv(227, 71%, 77%)
CMYK	cmyk(71.1%, 55.8%, 0%, 22.7%)
CIE-LAB	lab(40.76, 26.56, -60.71)
CIE-LCH	lch(40.76, 66.27, 293.63°)
OKLab	oklab(49.93% -0.0063 -0.1749)
OKLCH	oklch(49.93% 0.175 267.9)
XYZ	xyz(15.1701, 11.7159, 54.2744)
Luminance	0.1172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957C5 #C5A739

analogous

#399DC5 #3957C5 #6139C5

triadic

#3957C5 #C53957 #57C539

tetradic

#3957C5 #C5399D #C5A739 #39C561

square

#3957C5 #C5399D #C5A739 #39C561

split-complementary

#3957C5 #C56139 #9DC539

monochromatic

#1E2D66 #2B4296 #3957C5 #687FD3 #97A7E1

Accessibility & contrast

On white

6.28

#3957C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#3957C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957C5

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957C5	#FFFFFF	#000000	##FFFFFF
##3957C5	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067C9

Deuteranopia (green-blind)

#005AC3

Tritanopia (blue-blind)

#007285

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3957c5;
/* rgb */ color: rgb(57, 87, 197);
/* oklch */ color: oklch(49.9% 0.175 267.9);

Tailwind

colors: {
  custom: {
    50: '#8186d7',
    500: '#3957c5',
    950: '#000000',
  },
}

SCSS

$custom: #3957c5;
$custom-light: #8186d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3957c5",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 197
  },
  "hsl": {
    "h": 227.143,
    "s": 55.118,
    "l": 49.804
  },
  "oklch": {
    "l": 0.49926,
    "c": 0.17501,
    "h": 267.9
  },
  "luminance": 0.11717
}

Semantic roles & 50–950 ramp

primary

#3957C5

secondary

#CDBF8D

accent

#BE49DE

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3957C5

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

Preview Lab → · Contrast checker → · Palette generator →