#3957BD#3957BD

#3957BD is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.3% C 0.164 H 267.6°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#3957BD
RGB	rgb(57, 87, 189)
HSL	hsl(226, 54%, 48%)
HSV	hsv(226, 70%, 74%)
CMYK	cmyk(69.8%, 54%, 0%, 25.9%)
CIE-LAB	lab(40.18, 23.64, -57.00)
CIE-LCH	lch(40.18, 61.71, 292.53°)
OKLab	oklab(49.3% -0.0068 -0.164)
OKLCH	oklch(49.3% 0.164 267.6)
XYZ	xyz(14.2777, 11.3589, 49.5743)
Luminance	0.1136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957BD #BD9F39

analogous

#3999BD #3957BD #5D39BD

triadic

#3957BD #BD3957 #57BD39

tetradic

#3957BD #BD3999 #BD9F39 #39BD5D

square

#3957BD #BD3999 #BD9F39 #39BD5D

split-complementary

#3957BD #BD5D39 #99BD39

monochromatic

#1D2C5F #2B418E #3957BD #637CD0 #92A3DE

Accessibility & contrast

On white

6.42

#3957BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#3957BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957BD

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957BD	#FFFFFF	#000000	##FFFFFF
##3957BD	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0865C1

Deuteranopia (green-blind)

#0059BB

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3957bd;
/* rgb */ color: rgb(57, 87, 189);
/* oklch */ color: oklch(49.3% 0.164 267.6);

Tailwind

colors: {
  custom: {
    50: '#7f86d2',
    500: '#3957bd',
    950: '#000000',
  },
}

SCSS

$custom: #3957bd;
$custom-light: #7f86d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3957bd",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 189
  },
  "hsl": {
    "h": 226.364,
    "s": 53.659,
    "l": 48.235
  },
  "oklch": {
    "l": 0.49304,
    "c": 0.16413,
    "h": 267.6
  },
  "luminance": 0.1136
}

Semantic roles & 50–950 ramp

primary

#3957BD

secondary

#C9BB89

accent

#BC4BDD

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3957BD

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

Preview Lab → · Contrast checker → · Palette generator →