#3957BA#3957BA

#3957BA is a mid, vivid blue. Relative luminance 0.112; OKLCH L 49.1% C 0.160 H 267.5°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#3957BA
RGB	rgb(57, 87, 186)
HSL	hsl(226, 53%, 48%)
HSV	hsv(226, 69%, 73%)
CMYK	cmyk(69.4%, 53.2%, 0%, 27.1%)
CIE-LAB	lab(39.97, 22.55, -55.59)
CIE-LCH	lch(39.97, 59.99, 292.08°)
OKLab	oklab(49.08% -0.007 -0.1598)
OKLCH	oklch(49.08% 0.16 267.5)
XYZ	xyz(13.9554, 11.2300, 47.8770)
Luminance	0.1123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957BA #BA9C39

analogous

#3997BA #3957BA #5C39BA

triadic

#3957BA #BA3957 #57BA39

tetradic

#3957BA #BA3997 #BA9C39 #39BA5C

square

#3957BA #BA3997 #BA9C39 #39BA5C

split-complementary

#3957BA #BA5C39 #97BA39

monochromatic

#1C2B5C #2B418B #3957BA #617BCF #90A2DD

Accessibility & contrast

On white

6.47

#3957BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#3957BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957BA

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957BA	#FFFFFF	#000000	##FFFFFF
##3957BA	1.00	6.47	3.25	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1264BD

Deuteranopia (green-blind)

#0059B8

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3957ba;
/* rgb */ color: rgb(57, 87, 186);
/* oklch */ color: oklch(49.1% 0.160 267.5);

Tailwind

colors: {
  custom: {
    50: '#7f85cf',
    500: '#3957ba',
    950: '#000000',
  },
}

SCSS

$custom: #3957ba;
$custom-light: #7f85cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3957ba",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 186
  },
  "hsl": {
    "h": 226.047,
    "s": 53.086,
    "l": 47.647
  },
  "oklch": {
    "l": 0.49075,
    "c": 0.16,
    "h": 267.5
  },
  "luminance": 0.11231
}

Semantic roles & 50–950 ramp

primary

#3957BA

secondary

#C8B987

accent

#BB4BDC

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3957BA

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

Preview Lab → · Contrast checker → · Palette generator →