#3959C9#3959C9

#3959C9 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.6% C 0.178 H 267.5°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#3959C9
RGB	rgb(57, 89, 201)
HSL	hsl(227, 57%, 51%)
HSV	hsv(227, 72%, 79%)
CMYK	cmyk(71.6%, 55.7%, 0%, 21.2%)
CIE-LAB	lab(41.58, 26.73, -61.70)
CIE-LCH	lch(41.58, 67.24, 293.42°)
OKLab	oklab(50.63% -0.0077 -0.1778)
OKLCH	oklch(50.63% 0.178 267.5)
XYZ	xyz(15.7987, 12.2300, 56.7750)
Luminance	0.1223 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3959C9 #C9A939

analogous

#39A1C9 #3959C9 #6139C9

triadic

#3959C9 #C93959 #59C939

tetradic

#3959C9 #C939A1 #C9A939 #39C961

square

#3959C9 #C939A1 #C9A939 #39C961

split-complementary

#3959C9 #C96139 #A1C939

monochromatic

#1D2E6B #2A439B #3959C9 #6981D6 #99AAE3

Accessibility & contrast

On white

6.09

#3959C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#3959C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3959C9

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3959C9	#FFFFFF	#000000	##FFFFFF
##3959C9	1.00	6.09	3.45	6.09
#FFFFFF	6.09	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CD

Deuteranopia (green-blind)

#005CC7

Tritanopia (blue-blind)

#007488

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3959c9;
/* rgb */ color: rgb(57, 89, 201);
/* oklch */ color: oklch(50.6% 0.178 267.5);

Tailwind

colors: {
  custom: {
    50: '#8287da',
    500: '#3959c9',
    950: '#000000',
  },
}

SCSS

$custom: #3959c9;
$custom-light: #8287da;
$custom-dark: #000000;

JSON

{
  "hex": "#3959c9",
  "rgb": {
    "r": 57,
    "g": 89,
    "b": 201
  },
  "hsl": {
    "h": 226.667,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.50634,
    "c": 0.17795,
    "h": 267.5
  },
  "luminance": 0.12232
}

Semantic roles & 50–950 ramp

primary

#3959C9

secondary

#CFC18F

accent

#BE47E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3959C9

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

Preview Lab → · Contrast checker → · Palette generator →