#3B31B4#3B31B4

#3B31B4 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 42.0% C 0.197 H 277.1°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#3B31B4
RGB	rgb(59, 49, 180)
HSL	hsl(245, 57%, 45%)
HSV	hsv(245, 73%, 71%)
CMYK	cmyk(67.2%, 72.8%, 0%, 29.4%)
CIE-LAB	lab(30.45, 44.46, -67.58)
CIE-LCH	lch(30.45, 80.89, 303.34°)
OKLab	oklab(41.95% 0.0243 -0.1952)
OKLCH	oklch(41.95% 0.197 277.1)
XYZ	xyz(11.1375, 6.4208, 43.8236)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 4.07

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B31B4 #AAB431

analogous

#3169B4 #3B31B4 #7C31B4

triadic

#3B31B4 #B43B31 #31B43B

tetradic

#3B31B4 #B43169 #AAB431 #31B47C

square

#3B31B4 #B43169 #AAB431 #31B47C

split-complementary

#3B31B4 #B47C31 #69B431

monochromatic

#1B1754 #2B2484 #3B31B4 #5C52D0 #8982DD

Accessibility & contrast

On white

9.19

#3B31B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3B31B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B31B4

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B31B4	#FFFFFF	#000000	##FFFFFF
##3B31B4	1.00	9.19	2.28	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB8

Deuteranopia (green-blind)

#0042B2

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3b31b4;
/* rgb */ color: rgb(59, 49, 180);
/* oklch */ color: oklch(42.0% 0.197 277.1);

Tailwind

colors: {
  custom: {
    50: '#816bcc',
    500: '#3b31b4',
    950: '#000000',
  },
}

SCSS

$custom: #3b31b4;
$custom-light: #816bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3b31b4",
  "rgb": {
    "r": 59,
    "g": 49,
    "b": 180
  },
  "hsl": {
    "h": 244.58,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.41953,
    "c": 0.19672,
    "h": 277.1
  },
  "luminance": 0.06422
}

Semantic roles & 50–950 ramp

primary

#3B31B4

secondary

#C0C67B

accent

#E047D5

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3B31B4

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

Preview Lab → · Contrast checker → · Palette generator →