#3957C8#3957C8

#3957C8 is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.2% C 0.179 H 268.0°. Best body text is #FFFFFF at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#3957C8
RGB	rgb(57, 87, 200)
HSL	hsl(227, 57%, 50%)
HSV	hsv(227, 72%, 78%)
CMYK	cmyk(71.5%, 56.5%, 0%, 21.6%)
CIE-LAB	lab(40.98, 27.65, -62.09)
CIE-LCH	lch(40.98, 67.97, 294.00°)
OKLab	oklab(50.16% -0.0062 -0.1789)
OKLCH	oklch(50.16% 0.179 268)
XYZ	xyz(15.5173, 11.8548, 56.1028)
Luminance	0.1186 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957C8 #C8AA39

analogous

#399EC8 #3957C8 #6339C8

triadic

#3957C8 #C83957 #57C839

tetradic

#3957C8 #C8399E #C8AA39 #39C863

square

#3957C8 #C8399E #C8AA39 #39C863

split-complementary

#3957C8 #C86339 #9EC839

monochromatic

#1D2D69 #2B4299 #3957C8 #6980D5 #99A8E3

Accessibility & contrast

On white

6.23

#3957C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#3957C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957C8

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957C8	#FFFFFF	#000000	##FFFFFF
##3957C8	1.00	6.23	3.37	6.23
#FFFFFF	6.23	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067CC

Deuteranopia (green-blind)

#005AC6

Tritanopia (blue-blind)

#007387

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3957c8;
/* rgb */ color: rgb(57, 87, 200);
/* oklch */ color: oklch(50.2% 0.179 268.0);

Tailwind

colors: {
  custom: {
    50: '#8286da',
    500: '#3957c8',
    950: '#000000',
  },
}

SCSS

$custom: #3957c8;
$custom-light: #8286da;
$custom-dark: #000000;

JSON

{
  "hex": "#3957c8",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 200
  },
  "hsl": {
    "h": 227.413,
    "s": 56.522,
    "l": 50.392
  },
  "oklch": {
    "l": 0.50164,
    "c": 0.17906,
    "h": 268
  },
  "luminance": 0.11856
}

Semantic roles & 50–950 ramp

primary

#3957C8

secondary

#CEC18F

accent

#C048E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3957C8

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

Preview Lab → · Contrast checker → · Palette generator →