#3151B8#3151B8

#3151B8 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.3% C 0.167 H 266.8°. Best body text is #FFFFFF at 7.00:1 contrast (WCAG AA passes).

Color values

HEX	#3151B8
RGB	rgb(49, 81, 184)
HSL	hsl(226, 58%, 46%)
HSV	hsv(226, 73%, 72%)
CMYK	cmyk(73.4%, 56%, 0%, 27.8%)
CIE-LAB	lab(37.84, 24.61, -57.89)
CIE-LCH	lch(37.84, 62.90, 293.04°)
OKLab	oklab(47.32% -0.0094 -0.1668)
OKLCH	oklch(47.32% 0.167 266.8)
XYZ	xyz(12.8578, 9.9972, 46.5901)
Luminance	0.1000 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151B8 #B89831

analogous

#3194B8 #3151B8 #5431B8

triadic

#3151B8 #B83151 #51B831

tetradic

#3151B8 #B83194 #B89831 #31B854

square

#3151B8 #B83194 #B89831 #31B854

split-complementary

#3151B8 #B85431 #94B831

monochromatic

#172657 #243C88 #3151B8 #5572D2 #859ADE

Accessibility & contrast

On white

7.00

#3151B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

3.00

#3151B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3151B8

7.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151B8	#FFFFFF	#000000	##FFFFFF
##3151B8	1.00	7.00	3.00	7.00
#FFFFFF	7.00	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	7.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060BC

Deuteranopia (green-blind)

#0053B6

Tritanopia (blue-blind)

#006A7C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3151b8;
/* rgb */ color: rgb(49, 81, 184);
/* oklch */ color: oklch(47.3% 0.167 266.8);

Tailwind

colors: {
  custom: {
    50: '#7c81ce',
    500: '#3151b8',
    950: '#000000',
  },
}

SCSS

$custom: #3151b8;
$custom-light: #7c81ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3151b8",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 184
  },
  "hsl": {
    "h": 225.778,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.47322,
    "c": 0.16711,
    "h": 266.8
  },
  "luminance": 0.09999
}

Semantic roles & 50–950 ramp

primary

#3151B8

secondary

#C8B67D

accent

#BD47E1

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3151B8

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

Preview Lab → · Contrast checker → · Palette generator →