#3151AD#3151AD

#3151AD is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.5% C 0.152 H 266.1°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#3151AD
RGB	rgb(49, 81, 173)
HSL	hsl(225, 56%, 44%)
HSV	hsv(225, 72%, 68%)
CMYK	cmyk(71.7%, 53.2%, 0%, 32.2%)
CIE-LAB	lab(37.03, 20.50, -52.70)
CIE-LCH	lch(37.03, 56.55, 291.25°)
OKLab	oklab(46.46% -0.0102 -0.1516)
OKLCH	oklch(46.46% 0.152 266.1)
XYZ	xyz(11.7492, 9.5537, 40.7519)
Luminance	0.0955 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151AD #AD8D31

analogous

#318FAD #3151AD #4F31AD

triadic

#3151AD #AD3151 #51AD31

tetradic

#3151AD #AD318F #AD8D31 #31AD4F

square

#3151AD #AD318F #AD8D31 #31AD4F

split-complementary

#3151AD #AD4F31 #8FAD31

monochromatic

#16244E #233B7D #3151AD #4E6FCD #7E96DA

Accessibility & contrast

On white

7.21

#3151AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#3151AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3151AD

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151AD	#FFFFFF	#000000	##FFFFFF
##3151AD	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#115DB0

Deuteranopia (green-blind)

#0052AB

Tritanopia (blue-blind)

#006777

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3151ad;
/* rgb */ color: rgb(49, 81, 173);
/* oklch */ color: oklch(46.5% 0.152 266.1);

Tailwind

colors: {
  custom: {
    50: '#7981c6',
    500: '#3151ad',
    950: '#000000',
  },
}

SCSS

$custom: #3151ad;
$custom-light: #7981c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3151ad",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 173
  },
  "hsl": {
    "h": 224.516,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.46457,
    "c": 0.15194,
    "h": 266.1
  },
  "luminance": 0.09555
}

Semantic roles & 50–950 ramp

primary

#3151AD

secondary

#C3AF77

accent

#B849DF

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #3151AD

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

Preview Lab → · Contrast checker → · Palette generator →