#3159BB#3159BB

#3159BB is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.2% C 0.161 H 264.5°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#3159BB
RGB	rgb(49, 89, 187)
HSL	hsl(223, 58%, 46%)
HSV	hsv(223, 74%, 73%)
CMYK	cmyk(73.8%, 52.4%, 0%, 26.7%)
CIE-LAB	lab(40.22, 20.50, -55.78)
CIE-LCH	lch(40.22, 59.43, 290.18°)
OKLab	oklab(49.19% -0.0155 -0.1605)
OKLCH	oklch(49.19% 0.161 264.5)
XYZ	xyz(13.8055, 11.3841, 48.4738)
Luminance	0.1139 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3159BB #BB9331

analogous

#319EBB #3159BB #4E31BB

triadic

#3159BB #BB3159 #59BB31

tetradic

#3159BB #BB319E #BB9331 #31BB4E

square

#3159BB #BB319E #BB9331 #31BB4E

split-complementary

#3159BB #BB4E31 #9EBB31

monochromatic

#182B5A #24428B #3159BB #567AD3 #87A1E0

Accessibility & contrast

On white

6.41

#3159BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3159BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3159BB

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3159BB	#FFFFFF	#000000	##FFFFFF
##3159BB	1.00	6.41	3.28	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1665BE

Deuteranopia (green-blind)

#0059B9

Tritanopia (blue-blind)

#007181

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3159bb;
/* rgb */ color: rgb(49, 89, 187);
/* oklch */ color: oklch(49.2% 0.161 264.5);

Tailwind

colors: {
  custom: {
    50: '#7c87d0',
    500: '#3159bb',
    950: '#000000',
  },
}

SCSS

$custom: #3159bb;
$custom-light: #7c87d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3159bb",
  "rgb": {
    "r": 49,
    "g": 89,
    "b": 187
  },
  "hsl": {
    "h": 222.609,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.49192,
    "c": 0.16127,
    "h": 264.5
  },
  "luminance": 0.11386
}

Semantic roles & 50–950 ramp

primary

#3159BB

secondary

#C9B47F

accent

#B546E2

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3159BB

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

Preview Lab → · Contrast checker → · Palette generator →