#3139B8#3139B8

#3139B8 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.9% C 0.196 H 272.0°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#3139B8
RGB	rgb(49, 57, 184)
HSL	hsl(236, 58%, 46%)
HSV	hsv(236, 73%, 72%)
CMYK	cmyk(73.4%, 69%, 0%, 27.8%)
CIE-LAB	lab(31.89, 39.98, -67.60)
CIE-LCH	lch(31.89, 78.54, 300.60°)
OKLab	oklab(42.94% 0.0069 -0.1955)
OKLCH	oklch(42.94% 0.196 272)
XYZ	xyz(11.3786, 7.0387, 46.0971)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3139B8 #B8B031

analogous

#317DB8 #3139B8 #6C31B8

triadic

#3139B8 #B83139 #39B831

tetradic

#3139B8 #B8317D #B8B031 #31B86C

square

#3139B8 #B8317D #B8B031 #31B86C

split-complementary

#3139B8 #B86C31 #7DB831

monochromatic

#171B57 #242A88 #3139B8 #555CD2 #858ADE

Accessibility & contrast

On white

8.72

#3139B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3139B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3139B8

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3139B8	#FFFFFF	#000000	##FFFFFF
##3139B8	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BC

Deuteranopia (green-blind)

#0045B6

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3139b8;
/* rgb */ color: rgb(49, 57, 184);
/* oklch */ color: oklch(42.9% 0.196 272.0);

Tailwind

colors: {
  custom: {
    50: '#7d70ce',
    500: '#3139b8',
    950: '#000000',
  },
}

SCSS

$custom: #3139b8;
$custom-light: #7d70ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3139b8",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 184
  },
  "hsl": {
    "h": 236.444,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.42936,
    "c": 0.19565,
    "h": 272
  },
  "luminance": 0.0704
}

Semantic roles & 50–950 ramp

primary

#3139B8

secondary

#C8C47D

accent

#D847E1

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3139B8

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

Preview Lab → · Contrast checker → · Palette generator →