#3531B4#3531B4

#3531B4 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.5% C 0.198 H 274.8°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#3531B4
RGB	rgb(53, 49, 180)
HSL	hsl(242, 57%, 45%)
HSV	hsv(242, 73%, 71%)
CMYK	cmyk(70.6%, 72.8%, 0%, 29.4%)
CIE-LAB	lab(30.03, 43.79, -68.29)
CIE-LCH	lch(30.03, 81.12, 302.67°)
OKLab	oklab(41.54% 0.0167 -0.1974)
OKLCH	oklch(41.54% 0.198 274.8)
XYZ	xyz(10.8020, 6.2478, 43.8078)
Luminance	0.0625 (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

#3531B4 #B0B431

analogous

#316FB4 #3531B4 #7631B4

triadic

#3531B4 #B43531 #31B435

tetradic

#3531B4 #B4316F #B0B431 #31B476

square

#3531B4 #B4316F #B0B431 #31B476

split-complementary

#3531B4 #B47631 #6FB431

monochromatic

#191754 #272484 #3531B4 #5652D0 #8582DD

Accessibility & contrast

On white

9.33

#3531B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#3531B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3531B4

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3531B4	#FFFFFF	#000000	##FFFFFF
##3531B4	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB8

Deuteranopia (green-blind)

#0041B2

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3531b4;
/* rgb */ color: rgb(53, 49, 180);
/* oklch */ color: oklch(41.5% 0.198 274.8);

Tailwind

colors: {
  custom: {
    50: '#7f6bcc',
    500: '#3531b4',
    950: '#000000',
  },
}

SCSS

$custom: #3531b4;
$custom-light: #7f6bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3531b4",
  "rgb": {
    "r": 53,
    "g": 49,
    "b": 180
  },
  "hsl": {
    "h": 241.832,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.41544,
    "c": 0.19813,
    "h": 274.8
  },
  "luminance": 0.06249
}

Semantic roles & 50–950 ramp

primary

#3531B4

secondary

#C4C67B

accent

#E047DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3531B4

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

Preview Lab → · Contrast checker → · Palette generator →