#3331B4#3331B4

#3331B4 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.4% C 0.199 H 274.1°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#3331B4
RGB	rgb(51, 49, 180)
HSL	hsl(241, 57%, 45%)
HSV	hsv(241, 73%, 71%)
CMYK	cmyk(71.7%, 72.8%, 0%, 29.4%)
CIE-LAB	lab(29.90, 43.58, -68.51)
CIE-LCH	lch(29.90, 81.19, 302.46°)
OKLab	oklab(41.42% 0.0142 -0.1981)
OKLCH	oklch(41.42% 0.199 274.1)
XYZ	xyz(10.6990, 6.1947, 43.8030)
Luminance	0.0620 (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

#3331B4 #B2B431

analogous

#3171B4 #3331B4 #7531B4

triadic

#3331B4 #B43331 #31B433

tetradic

#3331B4 #B43171 #B2B431 #31B475

square

#3331B4 #B43171 #B2B431 #31B475

split-complementary

#3331B4 #B47531 #71B431

monochromatic

#181754 #252484 #3331B4 #5452D0 #8482DD

Accessibility & contrast

On white

9.38

#3331B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#3331B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3331B4

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3331B4	#FFFFFF	#000000	##FFFFFF
##3331B4	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB8

Deuteranopia (green-blind)

#0040B2

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3331b4;
/* rgb */ color: rgb(51, 49, 180);
/* oklch */ color: oklch(41.4% 0.199 274.1);

Tailwind

colors: {
  custom: {
    50: '#7e6bcc',
    500: '#3331b4',
    950: '#000000',
  },
}

SCSS

$custom: #3331b4;
$custom-light: #7e6bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3331b4",
  "rgb": {
    "r": 51,
    "g": 49,
    "b": 180
  },
  "hsl": {
    "h": 240.916,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.41417,
    "c": 0.19863,
    "h": 274.1
  },
  "luminance": 0.06196
}

Semantic roles & 50–950 ramp

primary

#3331B4

secondary

#C5C67B

accent

#E047DE

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3331B4

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

Preview Lab → · Contrast checker → · Palette generator →