#3957D5#3957D5

#3957D5 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.2% C 0.196 H 268.3°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#3957D5
RGB	rgb(57, 87, 213)
HSL	hsl(228, 65%, 53%)
HSV	hsv(228, 73%, 84%)
CMYK	cmyk(73.2%, 59.2%, 0%, 16.5%)
CIE-LAB	lab(41.98, 32.35, -67.95)
CIE-LCH	lch(41.98, 75.26, 295.46°)
OKLab	oklab(51.22% -0.0059 -0.1962)
OKLCH	oklch(51.22% 0.196 268.3)
XYZ	xyz(17.1016, 12.4885, 64.4471)
Luminance	0.1249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957D5 #D5B739

analogous

#39A5D5 #3957D5 #6939D5

triadic

#3957D5 #D53957 #57D539

tetradic

#3957D5 #D539A5 #D5B739 #39D569

square

#3957D5 #D539A5 #D5B739 #39D569

split-complementary

#3957D5 #D56939 #A5D539

monochromatic

#1A2C7A #253FAC #3957D5 #6B82E0 #9EADEA

Accessibility & contrast

On white

6.00

#3957D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#3957D5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957D5

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957D5	#FFFFFF	#000000	##FFFFFF
##3957D5	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD9

Deuteranopia (green-blind)

#005CD3

Tritanopia (blue-blind)

#00778D

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3957d5;
/* rgb */ color: rgb(57, 87, 213);
/* oklch */ color: oklch(51.2% 0.196 268.3);

Tailwind

colors: {
  custom: {
    50: '#8586e3',
    500: '#3957d5',
    950: '#000000',
  },
}

SCSS

$custom: #3957d5;
$custom-light: #8586e3;
$custom-dark: #000000;

JSON

{
  "hex": "#3957d5",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 213
  },
  "hsl": {
    "h": 228.462,
    "s": 65,
    "l": 52.941
  },
  "oklch": {
    "l": 0.51222,
    "c": 0.19627,
    "h": 268.3
  },
  "luminance": 0.1249
}

Semantic roles & 50–950 ramp

primary

#3957D5

secondary

#D7CA93

accent

#C840E8

background

#F8F8FE

surface

#F0EFFC

border

#CBCAD5

text

#0D0B16

muted

#7D7C84

Preview Lab

Preview with #3957D5

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

Preview Lab → · Contrast checker → · Palette generator →