#3942C9#3942C9

#3942C9 is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 46.5% C 0.205 H 272.3°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#3942C9
RGB	rgb(57, 66, 201)
HSL	hsl(236, 57%, 51%)
HSV	hsv(236, 72%, 79%)
CMYK	cmyk(71.6%, 67.2%, 0%, 21.2%)
CIE-LAB	lab(35.95, 41.23, -70.90)
CIE-LCH	lch(35.95, 82.01, 300.18°)
OKLab	oklab(46.47% 0.0084 -0.205)
OKLCH	oklch(46.47% 0.205 272.3)
XYZ	xyz(14.1746, 8.9819, 56.2337)
Luminance	0.0898 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3942C9 #C9C039

analogous

#398AC9 #3942C9 #7839C9

triadic

#3942C9 #C93942 #42C939

tetradic

#3942C9 #C9398A #C9C039 #39C978

square

#3942C9 #C9398A #C9C039 #39C978

split-complementary

#3942C9 #C97839 #8AC939

monochromatic

#1D226B #2A319B #3942C9 #6970D6 #999EE3

Accessibility & contrast

On white

7.51

#3942C9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#3942C9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3942C9

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3942C9	#FFFFFF	#000000	##FFFFFF
##3942C9	1.00	7.51	2.80	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BCD

Deuteranopia (green-blind)

#004EC6

Tritanopia (blue-blind)

#006680

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3942c9;
/* rgb */ color: rgb(57, 66, 201);
/* oklch */ color: oklch(46.5% 0.205 272.3);

Tailwind

colors: {
  custom: {
    50: '#8477db',
    500: '#3942c9',
    950: '#000000',
  },
}

SCSS

$custom: #3942c9;
$custom-light: #8477db;
$custom-dark: #000000;

JSON

{
  "hex": "#3942c9",
  "rgb": {
    "r": 57,
    "g": 66,
    "b": 201
  },
  "hsl": {
    "h": 236.25,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.46473,
    "c": 0.20513,
    "h": 272.3
  },
  "luminance": 0.08983
}

Semantic roles & 50–950 ramp

primary

#3942C9

secondary

#CFCB8F

accent

#D747E0

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3942C9

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

Preview Lab → · Contrast checker → · Palette generator →