#3957C0#3957C0

#3957C0 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.5% C 0.168 H 267.7°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#3957C0
RGB	rgb(57, 87, 192)
HSL	hsl(227, 54%, 49%)
HSV	hsv(227, 70%, 75%)
CMYK	cmyk(70.3%, 54.7%, 0%, 24.7%)
CIE-LAB	lab(40.39, 24.74, -58.40)
CIE-LCH	lch(40.39, 63.42, 292.96°)
OKLab	oklab(49.54% -0.0066 -0.1681)
OKLCH	oklch(49.54% 0.168 267.7)
XYZ	xyz(14.6067, 11.4905, 51.3071)
Luminance	0.1149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957C0 #C0A239

analogous

#399BC0 #3957C0 #5F39C0

triadic

#3957C0 #C03957 #57C039

tetradic

#3957C0 #C0399B #C0A239 #39C05F

square

#3957C0 #C0399B #C0A239 #39C05F

split-complementary

#3957C0 #C05F39 #9BC039

monochromatic

#1D2C62 #2B4291 #3957C0 #657DD1 #94A5DF

Accessibility & contrast

On white

6.37

#3957C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3957C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957C0

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957C0	#FFFFFF	#000000	##FFFFFF
##3957C0	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C4

Deuteranopia (green-blind)

#0059BE

Tritanopia (blue-blind)

#007083

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3957c0;
/* rgb */ color: rgb(57, 87, 192);
/* oklch */ color: oklch(49.5% 0.168 267.7);

Tailwind

colors: {
  custom: {
    50: '#8086d4',
    500: '#3957c0',
    950: '#000000',
  },
}

SCSS

$custom: #3957c0;
$custom-light: #8086d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3957c0",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 192
  },
  "hsl": {
    "h": 226.667,
    "s": 54.217,
    "l": 48.824
  },
  "oklch": {
    "l": 0.49535,
    "c": 0.16823,
    "h": 267.7
  },
  "luminance": 0.11492
}

Semantic roles & 50–950 ramp

primary

#3957C0

secondary

#CBBC8A

accent

#BD4ADE

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3957C0

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

Preview Lab → · Contrast checker → · Palette generator →