#3031AA#3031AA

#3031AA is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.2% C 0.187 H 273.7°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#3031AA
RGB	rgb(48, 49, 170)
HSL	hsl(240, 56%, 43%)
HSV	hsv(240, 72%, 67%)
CMYK	cmyk(71.8%, 71.2%, 0%, 33.3%)
CIE-LAB	lab(28.71, 39.89, -64.49)
CIE-LCH	lch(28.71, 75.83, 301.74°)
OKLab	oklab(40.22% 0.0122 -0.1865)
OKLCH	oklch(40.22% 0.187 273.7)
XYZ	xyz(9.5705, 5.7263, 38.6233)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.50

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3031AA #AAA930

analogous

#306EAA #3031AA #6C30AA

triadic

#3031AA #AA3031 #31AA30

tetradic

#3031AA #AA306E #AAA930 #30AA6C

square

#3031AA #AA306E #AAA930 #30AA6C

split-complementary

#3031AA #AA6C30 #6EAA30

monochromatic

#15154B #23237A #3031AA #4B4CCC #7B7CDA

Accessibility & contrast

On white

9.79

#3031AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#3031AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3031AA

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3031AA	#FFFFFF	#000000	##FFFFFF
##3031AA	1.00	9.79	2.15	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049AE

Deuteranopia (green-blind)

#003EA8

Tritanopia (blue-blind)

#00536A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3031aa;
/* rgb */ color: rgb(48, 49, 170);
/* oklch */ color: oklch(40.2% 0.187 273.7);

Tailwind

colors: {
  custom: {
    50: '#7b6ac4',
    500: '#3031aa',
    950: '#000000',
  },
}

SCSS

$custom: #3031aa;
$custom-light: #7b6ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#3031aa",
  "rgb": {
    "r": 48,
    "g": 49,
    "b": 170
  },
  "hsl": {
    "h": 239.508,
    "s": 55.963,
    "l": 42.745
  },
  "oklch": {
    "l": 0.40218,
    "c": 0.18687,
    "h": 273.7
  },
  "luminance": 0.05727
}

Semantic roles & 50–950 ramp

primary

#3031AA

secondary

#C2C174

accent

#DE49DF

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3031AA

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

Preview Lab → · Contrast checker → · Palette generator →