#3159BF#3159BF

#3159BF is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.5% C 0.167 H 264.8°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#3159BF
RGB	rgb(49, 89, 191)
HSL	hsl(223, 59%, 47%)
HSV	hsv(223, 74%, 75%)
CMYK	cmyk(74.3%, 53.4%, 0%, 25.1%)
CIE-LAB	lab(40.50, 22.00, -57.66)
CIE-LCH	lch(40.50, 61.71, 290.89°)
OKLab	oklab(49.5% -0.0152 -0.166)
OKLCH	oklch(49.5% 0.167 264.8)
XYZ	xyz(14.2396, 11.5578, 50.7605)
Luminance	0.1156 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3159BF #BF9731

analogous

#31A0BF #3159BF #5031BF

triadic

#3159BF #BF3159 #59BF31

tetradic

#3159BF #BF31A0 #BF9731 #31BF50

square

#3159BF #BF31A0 #BF9731 #31BF50

split-complementary

#3159BF #BF5031 #A0BF31

monochromatic

#182C5E #25428E #3159BF #597CD4 #8AA2E1

Accessibility & contrast

On white

6.34

#3159BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#3159BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3159BF

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3159BF	#FFFFFF	#000000	##FFFFFF
##3159BF	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A66C3

Deuteranopia (green-blind)

#0059BD

Tritanopia (blue-blind)

#007283

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3159bf;
/* rgb */ color: rgb(49, 89, 191);
/* oklch */ color: oklch(49.5% 0.167 264.8);

Tailwind

colors: {
  custom: {
    50: '#7d87d3',
    500: '#3159bf',
    950: '#000000',
  },
}

SCSS

$custom: #3159bf;
$custom-light: #7d87d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3159bf",
  "rgb": {
    "r": 49,
    "g": 89,
    "b": 191
  },
  "hsl": {
    "h": 223.099,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.49498,
    "c": 0.16673,
    "h": 264.8
  },
  "luminance": 0.11559
}

Semantic roles & 50–950 ramp

primary

#3159BF

secondary

#CBB681

accent

#B645E2

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3159BF

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

Preview Lab → · Contrast checker → · Palette generator →