#3151A5#3151A5

#3151A5 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 45.9% C 0.141 H 265.5°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#3151A5
RGB	rgb(49, 81, 165)
HSL	hsl(223, 54%, 42%)
HSV	hsv(223, 70%, 65%)
CMYK	cmyk(70.3%, 50.9%, 0%, 35.3%)
CIE-LAB	lab(36.47, 17.50, -48.85)
CIE-LCH	lch(36.47, 51.89, 289.71°)
OKLab	oklab(45.85% -0.0111 -0.1403)
OKLCH	oklch(45.85% 0.141 265.5)
XYZ	xyz(10.9982, 9.2533, 36.7965)
Luminance	0.0925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151A5 #A58531

analogous

#318BA5 #3151A5 #4B31A5

triadic

#3151A5 #A53151 #51A531

tetradic

#3151A5 #A5318B #A58531 #31A54B

square

#3151A5 #A5318B #A58531 #31A54B

split-complementary

#3151A5 #A54B31 #8BA531

monochromatic

#152347 #233A76 #3151A5 #4A6DC9 #7993D7

Accessibility & contrast

On white

7.37

#3151A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#3151A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3151A5

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151A5	#FFFFFF	#000000	##FFFFFF
##3151A5	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#205BA8

Deuteranopia (green-blind)

#0051A3

Tritanopia (blue-blind)

#006573

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3151a5;
/* rgb */ color: rgb(49, 81, 165);
/* oklch */ color: oklch(45.9% 0.141 265.5);

Tailwind

colors: {
  custom: {
    50: '#7781c0',
    500: '#3151a5',
    950: '#000000',
  },
}

SCSS

$custom: #3151a5;
$custom-light: #7781c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3151a5",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 165
  },
  "hsl": {
    "h": 223.448,
    "s": 54.206,
    "l": 41.961
  },
  "oklch": {
    "l": 0.45852,
    "c": 0.14069,
    "h": 265.5
  },
  "luminance": 0.09254
}

Semantic roles & 50–950 ramp

primary

#3151A5

secondary

#C0AA72

accent

#B54ADE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3151A5

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

Preview Lab → · Contrast checker → · Palette generator →