#3151C1#3151C1

#3151C1 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.1% C 0.179 H 267.1°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#3151C1
RGB	rgb(49, 81, 193)
HSL	hsl(227, 60%, 47%)
HSV	hsv(227, 75%, 76%)
CMYK	cmyk(74.6%, 58%, 0%, 24.3%)
CIE-LAB	lab(38.53, 27.96, -62.03)
CIE-LCH	lch(38.53, 68.04, 294.26°)
OKLab	oklab(48.06% -0.0091 -0.179)
OKLCH	oklch(48.06% 0.179 267.1)
XYZ	xyz(13.8313, 10.3866, 51.7176)
Luminance	0.1039 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151C1 #C1A131

analogous

#3199C1 #3151C1 #5931C1

triadic

#3151C1 #C13151 #51C131

tetradic

#3151C1 #C13199 #C1A131 #31C159

square

#3151C1 #C13199 #C1A131 #31C159

split-complementary

#3151C1 #C15931 #99C131

monochromatic

#18285F #253D90 #3151C1 #5A75D5 #8B9EE2

Accessibility & contrast

On white

6.82

#3151C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#3151C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3151C1

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151C1	#FFFFFF	#000000	##FFFFFF
##3151C1	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C5

Deuteranopia (green-blind)

#0054BF

Tritanopia (blue-blind)

#006D81

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3151c1;
/* rgb */ color: rgb(49, 81, 193);
/* oklch */ color: oklch(48.1% 0.179 267.1);

Tailwind

colors: {
  custom: {
    50: '#7e81d5',
    500: '#3151c1',
    950: '#000000',
  },
}

SCSS

$custom: #3151c1;
$custom-light: #7e81d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3151c1",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 193
  },
  "hsl": {
    "h": 226.667,
    "s": 59.504,
    "l": 47.451
  },
  "oklch": {
    "l": 0.48057,
    "c": 0.17926,
    "h": 267.1
  },
  "luminance": 0.10388
}

Semantic roles & 50–950 ramp

primary

#3151C1

secondary

#CCBB82

accent

#C045E3

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3151C1

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

Preview Lab → · Contrast checker → · Palette generator →