#3157B1#3157B1

#3157B1 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.0% C 0.150 H 264.3°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3157B1
RGB	rgb(49, 87, 177)
HSL	hsl(222, 57%, 44%)
HSV	hsv(222, 72%, 69%)
CMYK	cmyk(72.3%, 50.8%, 0%, 30.6%)
CIE-LAB	lab(38.97, 18.05, -51.93)
CIE-LCH	lch(38.97, 54.98, 289.17°)
OKLab	oklab(48.02% -0.015 -0.1492)
OKLCH	oklch(48.02% 0.15 264.3)
XYZ	xyz(12.6078, 10.6424, 42.9762)
Luminance	0.1064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3157B1 #B18B31

analogous

#3197B1 #3157B1 #4B31B1

triadic

#3157B1 #B13157 #57B131

tetradic

#3157B1 #B13197 #B18B31 #31B14B

square

#3157B1 #B13197 #B18B31 #31B14B

split-complementary

#3157B1 #B14B31 #97B131

monochromatic

#162851 #243F81 #3157B1 #5176CF #809CDC

Accessibility & contrast

On white

6.71

#3157B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3157B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3157B1

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3157B1	#FFFFFF	#000000	##FFFFFF
##3157B1	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2162B4

Deuteranopia (green-blind)

#0056AF

Tritanopia (blue-blind)

#006C7B

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3157b1;
/* rgb */ color: rgb(49, 87, 177);
/* oklch */ color: oklch(48.0% 0.150 264.3);

Tailwind

colors: {
  custom: {
    50: '#7a85c9',
    500: '#3157b1',
    950: '#000000',
  },
}

SCSS

$custom: #3157b1;
$custom-light: #7a85c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3157b1",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 177
  },
  "hsl": {
    "h": 222.188,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.48021,
    "c": 0.14997,
    "h": 264.3
  },
  "luminance": 0.10644
}

Semantic roles & 50–950 ramp

primary

#3157B1

secondary

#C5AE79

accent

#B348E0

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3157B1

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

Preview Lab → · Contrast checker → · Palette generator →