#3957CE#3957CE

#3957CE is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.6% C 0.187 H 268.2°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#3957CE
RGB	rgb(57, 87, 206)
HSL	hsl(228, 60%, 52%)
HSV	hsv(228, 72%, 81%)
CMYK	cmyk(72.3%, 57.8%, 0%, 19.2%)
CIE-LAB	lab(41.44, 29.82, -64.82)
CIE-LCH	lch(41.44, 71.35, 294.71°)
OKLab	oklab(50.65% -0.006 -0.187)
OKLCH	oklch(50.65% 0.187 268.2)
XYZ	xyz(16.2323, 12.1408, 59.8685)
Luminance	0.1214 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957CE #CEB039

analogous

#39A2CE #3957CE #6539CE

triadic

#3957CE #CE3957 #57CE39

tetradic

#3957CE #CE39A2 #CEB039 #39CE65

square

#3957CE #CE39A2 #CEB039 #39CE65

split-complementary

#3957CE #CE6539 #A2CE39

monochromatic

#1C2D71 #2841A2 #3957CE #6A81DA #9BAAE6

Accessibility & contrast

On white

6.13

#3957CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#3957CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957CE

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957CE	#FFFFFF	#000000	##FFFFFF
##3957CE	1.00	6.13	3.43	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D2

Deuteranopia (green-blind)

#005BCC

Tritanopia (blue-blind)

#00758A

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3957ce;
/* rgb */ color: rgb(57, 87, 206);
/* oklch */ color: oklch(50.6% 0.187 268.2);

Tailwind

colors: {
  custom: {
    50: '#8386de',
    500: '#3957ce',
    950: '#000000',
  },
}

SCSS

$custom: #3957ce;
$custom-light: #8386de;
$custom-dark: #000000;

JSON

{
  "hex": "#3957ce",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 206
  },
  "hsl": {
    "h": 227.919,
    "s": 60.324,
    "l": 51.569
  },
  "oklch": {
    "l": 0.50647,
    "c": 0.18706,
    "h": 268.2
  },
  "luminance": 0.12142
}

Semantic roles & 50–950 ramp

primary

#3957CE

secondary

#D2C591

accent

#C344E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3957CE

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

Preview Lab → · Contrast checker → · Palette generator →