#3957AF#3957AF

#3957AF is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.3% C 0.145 H 266.8°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#3957AF
RGB	rgb(57, 87, 175)
HSL	hsl(225, 51%, 45%)
HSV	hsv(225, 67%, 69%)
CMYK	cmyk(67.4%, 50.3%, 0%, 31.4%)
CIE-LAB	lab(39.21, 18.53, -50.35)
CIE-LCH	lch(39.21, 53.65, 290.20°)
OKLab	oklab(48.26% -0.0081 -0.1444)
OKLCH	oklch(48.26% 0.145 266.8)
XYZ	xyz(12.8307, 10.7802, 41.9537)
Luminance	0.1078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957AF #AF9139

analogous

#3992AF #3957AF #5639AF

triadic

#3957AF #AF3957 #57AF39

tetradic

#3957AF #AF3992 #AF9139 #39AF56

square

#3957AF #AF3992 #AF9139 #39AF56

split-complementary

#3957AF #AF5639 #92AF39

monochromatic

#1B2953 #2A4081 #3957AF #5B77CA #8A9ED9

Accessibility & contrast

On white

6.65

#3957AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3957AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957AF

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957AF	#FFFFFF	#000000	##FFFFFF
##3957AF	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2562B2

Deuteranopia (green-blind)

#0057AD

Tritanopia (blue-blind)

#006C7B

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3957af;
/* rgb */ color: rgb(57, 87, 175);
/* oklch */ color: oklch(48.3% 0.145 266.8);

Tailwind

colors: {
  custom: {
    50: '#7d85c7',
    500: '#3957af',
    950: '#000000',
  },
}

SCSS

$custom: #3957af;
$custom-light: #7d85c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3957af",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 175
  },
  "hsl": {
    "h": 224.746,
    "s": 50.862,
    "l": 45.49
  },
  "oklch": {
    "l": 0.48259,
    "c": 0.14464,
    "h": 266.8
  },
  "luminance": 0.10781
}

Semantic roles & 50–950 ramp

primary

#3957AF

secondary

#C3B281

accent

#B74DDA

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3957AF

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

Preview Lab → · Contrast checker → · Palette generator →