#3151C0#3151C0

#3151C0 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 48.0% C 0.178 H 267.1°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#3151C0
RGB	rgb(49, 81, 192)
HSL	hsl(227, 59%, 47%)
HSV	hsv(227, 74%, 75%)
CMYK	cmyk(74.5%, 57.8%, 0%, 24.7%)
CIE-LAB	lab(38.45, 27.59, -61.58)
CIE-LCH	lch(38.45, 67.48, 294.14°)
OKLab	oklab(47.97% -0.0091 -0.1777)
OKLCH	oklch(47.97% 0.178 267.1)
XYZ	xyz(13.7202, 10.3421, 51.1321)
Luminance	0.1034 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151C0 #C0A031

analogous

#3199C0 #3151C0 #5831C0

triadic

#3151C0 #C03151 #51C031

tetradic

#3151C0 #C03199 #C0A031 #31C058

square

#3151C0 #C03199 #C0A031 #31C058

split-complementary

#3151C0 #C05831 #99C031

monochromatic

#18285E #253C8F #3151C0 #5975D5 #8A9EE1

Accessibility & contrast

On white

6.84

#3151C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3151C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3151C0

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151C0	#FFFFFF	#000000	##FFFFFF
##3151C0	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C4

Deuteranopia (green-blind)

#0054BE

Tritanopia (blue-blind)

#006D80

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3151c0;
/* rgb */ color: rgb(49, 81, 192);
/* oklch */ color: oklch(48.0% 0.178 267.1);

Tailwind

colors: {
  custom: {
    50: '#7d81d4',
    500: '#3151c0',
    950: '#000000',
  },
}

SCSS

$custom: #3151c0;
$custom-light: #7d81d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3151c0",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 192
  },
  "hsl": {
    "h": 226.573,
    "s": 59.336,
    "l": 47.255
  },
  "oklch": {
    "l": 0.47974,
    "c": 0.17792,
    "h": 267.1
  },
  "luminance": 0.10344
}

Semantic roles & 50–950 ramp

primary

#3151C0

secondary

#CBBB82

accent

#BF45E3

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3151C0

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

Preview Lab → · Contrast checker → · Palette generator →