#3957D0#3957D0

#3957D0 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.8% C 0.190 H 268.2°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#3957D0
RGB	rgb(57, 87, 208)
HSL	hsl(228, 62%, 52%)
HSV	hsv(228, 73%, 82%)
CMYK	cmyk(72.6%, 58.2%, 0%, 18.4%)
CIE-LAB	lab(41.59, 30.55, -65.72)
CIE-LCH	lch(41.59, 72.47, 294.93°)
OKLab	oklab(50.81% -0.0059 -0.1896)
OKLCH	oklch(50.81% 0.19 268.2)
XYZ	xyz(16.4768, 12.2386, 61.1562)
Luminance	0.1224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957D0 #D0B239

analogous

#39A3D0 #3957D0 #6639D0

triadic

#3957D0 #D03957 #57D039

tetradic

#3957D0 #D039A3 #D0B239 #39D066

square

#3957D0 #D039A3 #D0B239 #39D066

split-complementary

#3957D0 #D06639 #A3D039

monochromatic

#1B2D73 #2740A5 #3957D0 #6A81DC #9CABE7

Accessibility & contrast

On white

6.09

#3957D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#3957D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957D0

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957D0	#FFFFFF	#000000	##FFFFFF
##3957D0	1.00	6.09	3.45	6.09
#FFFFFF	6.09	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D4

Deuteranopia (green-blind)

#005BCE

Tritanopia (blue-blind)

#00758B

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3957d0;
/* rgb */ color: rgb(57, 87, 208);
/* oklch */ color: oklch(50.8% 0.190 268.2);

Tailwind

colors: {
  custom: {
    50: '#8486df',
    500: '#3957d0',
    950: '#000000',
  },
}

SCSS

$custom: #3957d0;
$custom-light: #8486df;
$custom-dark: #000000;

JSON

{
  "hex": "#3957d0",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 208
  },
  "hsl": {
    "h": 228.079,
    "s": 61.633,
    "l": 51.961
  },
  "oklch": {
    "l": 0.5081,
    "c": 0.1897,
    "h": 268.2
  },
  "luminance": 0.1224
}

Semantic roles & 50–950 ramp

primary

#3957D0

secondary

#D3C691

accent

#C543E5

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3957D0

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

Preview Lab → · Contrast checker → · Palette generator →