#3157BB#3157BB

#3157BB is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.8% C 0.164 H 265.1°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#3157BB
RGB	rgb(49, 87, 187)
HSL	hsl(223, 58%, 46%)
HSV	hsv(223, 74%, 73%)
CMYK	cmyk(73.8%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(39.67, 21.81, -56.67)
CIE-LCH	lch(39.67, 60.72, 291.05°)
OKLab	oklab(48.78% -0.0139 -0.1632)
OKLCH	oklch(48.78% 0.164 265.1)
XYZ	xyz(13.6413, 11.0557, 48.4191)
Luminance	0.1106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3157BB #BB9531

analogous

#319CBB #3157BB #5031BB

triadic

#3157BB #BB3157 #57BB31

tetradic

#3157BB #BB319C #BB9531 #31BB50

square

#3157BB #BB319C #BB9531 #31BB50

split-complementary

#3157BB #BB5031 #9CBB31

monochromatic

#182A5A #24408B #3157BB #5679D3 #879FE0

Accessibility & contrast

On white

6.54

#3157BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#3157BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3157BB

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3157BB	#FFFFFF	#000000	##FFFFFF
##3157BB	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B64BF

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3157bb;
/* rgb */ color: rgb(49, 87, 187);
/* oklch */ color: oklch(48.8% 0.164 265.1);

Tailwind

colors: {
  custom: {
    50: '#7c85d0',
    500: '#3157bb',
    950: '#000000',
  },
}

SCSS

$custom: #3157bb;
$custom-light: #7c85d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3157bb",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 223.478,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.48778,
    "c": 0.16375,
    "h": 265.1
  },
  "luminance": 0.11057
}

Semantic roles & 50–950 ramp

primary

#3157BB

secondary

#C9B57F

accent

#B746E2

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3157BB

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

Preview Lab → · Contrast checker → · Palette generator →