#3151C7#3151C7

#3151C7 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.6% C 0.187 H 267.3°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#3151C7
RGB	rgb(49, 81, 199)
HSL	hsl(227, 60%, 49%)
HSV	hsv(227, 75%, 78%)
CMYK	cmyk(75.4%, 59.3%, 0%, 22%)
CIE-LAB	lab(39.00, 30.18, -64.75)
CIE-LCH	lch(39.00, 71.44, 294.99°)
OKLab	oklab(48.56% -0.0089 -0.187)
OKLCH	oklch(48.56% 0.187 267.3)
XYZ	xyz(14.5143, 10.6598, 55.3144)
Luminance	0.1066 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151C7 #C7A731

analogous

#319CC7 #3151C7 #5C31C7

triadic

#3151C7 #C73151 #51C731

tetradic

#3151C7 #C7319C #C7A731 #31C75C

square

#3151C7 #C7319C #C7A731 #31C75C

split-complementary

#3151C7 #C75C31 #9CC731

monochromatic

#192965 #253D96 #3151C7 #5E78D7 #8FA1E3

Accessibility & contrast

On white

6.70

#3151C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3151C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3151C7

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151C7	#FFFFFF	#000000	##FFFFFF
##3151C7	1.00	6.70	3.13	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CB

Deuteranopia (green-blind)

#0055C5

Tritanopia (blue-blind)

#006F84

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3151c7;
/* rgb */ color: rgb(49, 81, 199);
/* oklch */ color: oklch(48.6% 0.187 267.3);

Tailwind

colors: {
  custom: {
    50: '#7f81d9',
    500: '#3151c7',
    950: '#000000',
  },
}

SCSS

$custom: #3151c7;
$custom-light: #7f81d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3151c7",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 199
  },
  "hsl": {
    "h": 227.2,
    "s": 60.484,
    "l": 48.627
  },
  "oklch": {
    "l": 0.48559,
    "c": 0.18723,
    "h": 267.3
  },
  "luminance": 0.10661
}

Semantic roles & 50–950 ramp

primary

#3151C7

secondary

#CEBF86

accent

#C244E4

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3151C7

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

Preview Lab → · Contrast checker → · Palette generator →