#3957BC#3957BC

#3957BC is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.2% C 0.163 H 267.6°. Best body text is #FFFFFF at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#3957BC
RGB	rgb(57, 87, 188)
HSL	hsl(226, 53%, 48%)
HSV	hsv(226, 70%, 74%)
CMYK	cmyk(69.7%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(40.11, 23.28, -56.53)
CIE-LCH	lch(40.11, 61.14, 292.38°)
OKLab	oklab(49.23% -0.0069 -0.1626)
OKLCH	oklch(49.23% 0.163 267.6)
XYZ	xyz(14.1695, 11.3157, 49.0046)
Luminance	0.1132 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957BC #BC9E39

analogous

#3998BC #3957BC #5D39BC

triadic

#3957BC #BC3957 #57BC39

tetradic

#3957BC #BC3998 #BC9E39 #39BC5D

square

#3957BC #BC3998 #BC9E39 #39BC5D

split-complementary

#3957BC #BC5D39 #98BC39

monochromatic

#1D2C5E #2B418D #3957BC #637CD0 #92A3DE

Accessibility & contrast

On white

6.44

#3957BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#3957BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957BC

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957BC	#FFFFFF	#000000	##FFFFFF
##3957BC	1.00	6.44	3.26	6.44
#FFFFFF	6.44	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C65C0

Deuteranopia (green-blind)

#0059BA

Tritanopia (blue-blind)

#006F81

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3957bc;
/* rgb */ color: rgb(57, 87, 188);
/* oklch */ color: oklch(49.2% 0.163 267.6);

Tailwind

colors: {
  custom: {
    50: '#7f85d1',
    500: '#3957bc',
    950: '#000000',
  },
}

SCSS

$custom: #3957bc;
$custom-light: #7f85d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3957bc",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 226.26,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.49227,
    "c": 0.16276,
    "h": 267.6
  },
  "luminance": 0.11317
}

Semantic roles & 50–950 ramp

primary

#3957BC

secondary

#C9BA88

accent

#BB4BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3957BC

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

Preview Lab → · Contrast checker → · Palette generator →