#3151AA#3151AA

#3151AA is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.2% C 0.148 H 265.9°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#3151AA
RGB	rgb(49, 81, 170)
HSL	hsl(224, 55%, 43%)
HSV	hsv(224, 71%, 67%)
CMYK	cmyk(71.2%, 52.4%, 0%, 33.3%)
CIE-LAB	lab(36.82, 19.37, -51.26)
CIE-LCH	lch(36.82, 54.80, 290.70°)
OKLab	oklab(46.23% -0.0105 -0.1474)
OKLCH	oklch(46.23% 0.148 265.9)
XYZ	xyz(11.4622, 9.4389, 39.2402)
Luminance	0.0944 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151AA #AA8A31

analogous

#318DAA #3151AA #4D31AA

triadic

#3151AA #AA3151 #51AA31

tetradic

#3151AA #AA318D #AA8A31 #31AA4D

square

#3151AA #AA318D #AA8A31 #31AA4D

split-complementary

#3151AA #AA4D31 #8DAA31

monochromatic

#16244B #233A7A #3151AA #4D6ECC #7C95D9

Accessibility & contrast

On white

7.27

#3151AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#3151AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3151AA

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151AA	#FFFFFF	#000000	##FFFFFF
##3151AA	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#185CAD

Deuteranopia (green-blind)

#0051A8

Tritanopia (blue-blind)

#006675

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3151aa;
/* rgb */ color: rgb(49, 81, 170);
/* oklch */ color: oklch(46.2% 0.148 265.9);

Tailwind

colors: {
  custom: {
    50: '#7981c4',
    500: '#3151aa',
    950: '#000000',
  },
}

SCSS

$custom: #3151aa;
$custom-light: #7981c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3151aa",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 170
  },
  "hsl": {
    "h": 224.132,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.46228,
    "c": 0.14774,
    "h": 265.9
  },
  "luminance": 0.0944
}

Semantic roles & 50–950 ramp

primary

#3151AA

secondary

#C2AE75

accent

#B749DF

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #3151AA

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

Preview Lab → · Contrast checker → · Palette generator →