#4031B5#4031B5

#4031B5 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.4% C 0.197 H 279.0°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#4031B5
RGB	rgb(64, 49, 181)
HSL	hsl(247, 57%, 45%)
HSV	hsv(247, 73%, 71%)
CMYK	cmyk(64.6%, 72.9%, 0%, 29%)
CIE-LAB	lab(30.93, 45.38, -67.37)
CIE-LCH	lch(30.93, 81.23, 303.96°)
OKLab	oklab(42.42% 0.0308 -0.1945)
OKLCH	oklch(42.42% 0.197 279)
XYZ	xyz(11.5505, 6.6219, 44.3766)
Luminance	0.0662 (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

#4031B5 #A6B531

analogous

#3164B5 #4031B5 #8231B5

triadic

#4031B5 #B54031 #31B540

tetradic

#4031B5 #B53164 #A6B531 #31B582

square

#4031B5 #B53164 #A6B531 #31B582

split-complementary

#4031B5 #B58231 #64B531

monochromatic

#1E1755 #2F2485 #4031B5 #6153D0 #8D83DD

Accessibility & contrast

On white

9.03

#4031B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#4031B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4031B5

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4031B5	#FFFFFF	#000000	##FFFFFF
##4031B5	1.00	9.03	2.32	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB9

Deuteranopia (green-blind)

#0043B3

Tritanopia (blue-blind)

#005670

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #4031b5;
/* rgb */ color: rgb(64, 49, 181);
/* oklch */ color: oklch(42.4% 0.197 279.0);

Tailwind

colors: {
  custom: {
    50: '#846bcc',
    500: '#4031b5',
    950: '#000000',
  },
}

SCSS

$custom: #4031b5;
$custom-light: #846bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#4031b5",
  "rgb": {
    "r": 64,
    "g": 49,
    "b": 181
  },
  "hsl": {
    "h": 246.818,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42422,
    "c": 0.19689,
    "h": 279
  },
  "luminance": 0.06623
}

Semantic roles & 50–950 ramp

primary

#4031B5

secondary

#BEC77B

accent

#E147CF

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #4031B5

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

Preview Lab → · Contrast checker → · Palette generator →