#3957CA#3957CA

#3957CA is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.3% C 0.182 H 268.1°. Best body text is #FFFFFF at 6.19:1 contrast (WCAG AA passes).

Color values

HEX	#3957CA
RGB	rgb(57, 87, 202)
HSL	hsl(228, 58%, 51%)
HSV	hsv(228, 72%, 79%)
CMYK	cmyk(71.8%, 56.9%, 0%, 20.8%)
CIE-LAB	lab(41.13, 28.38, -63.00)
CIE-LCH	lch(41.13, 69.10, 294.25°)
OKLab	oklab(50.32% -0.0061 -0.1816)
OKLCH	oklch(50.32% 0.182 268.1)
XYZ	xyz(15.7525, 11.9489, 57.3418)
Luminance	0.1195 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957CA #CAAC39

analogous

#399FCA #3957CA #6339CA

triadic

#3957CA #CA3957 #57CA39

tetradic

#3957CA #CA399F #CAAC39 #39CA63

square

#3957CA #CA399F #CAAC39 #39CA63

split-complementary

#3957CA #CA6339 #9FCA39

monochromatic

#1D2D6C #2A419C #3957CA #6980D7 #9AA9E4

Accessibility & contrast

On white

6.19

#3957CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#3957CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957CA

6.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957CA	#FFFFFF	#000000	##FFFFFF
##3957CA	1.00	6.19	3.39	6.19
#FFFFFF	6.19	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CE

Deuteranopia (green-blind)

#005BC8

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3957ca;
/* rgb */ color: rgb(57, 87, 202);
/* oklch */ color: oklch(50.3% 0.182 268.1);

Tailwind

colors: {
  custom: {
    50: '#8286db',
    500: '#3957ca',
    950: '#000000',
  },
}

SCSS

$custom: #3957ca;
$custom-light: #8286db;
$custom-dark: #000000;

JSON

{
  "hex": "#3957ca",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 202
  },
  "hsl": {
    "h": 227.586,
    "s": 57.769,
    "l": 50.784
  },
  "oklch": {
    "l": 0.50324,
    "c": 0.18173,
    "h": 268.1
  },
  "luminance": 0.11951
}

Semantic roles & 50–950 ramp

primary

#3957CA

secondary

#D0C28F

accent

#C147E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3957CA

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

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