#3139B5#3139B5

#3139B5 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.6% C 0.192 H 272.1°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#3139B5
RGB	rgb(49, 57, 181)
HSL	hsl(236, 57%, 45%)
HSV	hsv(236, 73%, 71%)
CMYK	cmyk(72.9%, 68.5%, 0%, 29%)
CIE-LAB	lab(31.61, 38.94, -66.29)
CIE-LCH	lch(31.61, 76.88, 300.43°)
OKLab	oklab(42.64% 0.0072 -0.1917)
OKLCH	oklch(42.64% 0.192 272.1)
XYZ	xyz(11.0674, 6.9143, 44.4584)
Luminance	0.0692 (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

#3139B5 #B5AD31

analogous

#317BB5 #3139B5 #6B31B5

triadic

#3139B5 #B53139 #39B531

tetradic

#3139B5 #B5317B #B5AD31 #31B56B

square

#3139B5 #B5317B #B5AD31 #31B56B

split-complementary

#3139B5 #B56B31 #7BB531

monochromatic

#171B55 #242A85 #3139B5 #535AD0 #8388DD

Accessibility & contrast

On white

8.81

#3139B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#3139B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3139B5

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3139B5	#FFFFFF	#000000	##FFFFFF
##3139B5	1.00	8.81	2.38	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B9

Deuteranopia (green-blind)

#0044B3

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3139b5;
/* rgb */ color: rgb(49, 57, 181);
/* oklch */ color: oklch(42.6% 0.192 272.1);

Tailwind

colors: {
  custom: {
    50: '#7d70cc',
    500: '#3139b5',
    950: '#000000',
  },
}

SCSS

$custom: #3139b5;
$custom-light: #7d70cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3139b5",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 181
  },
  "hsl": {
    "h": 236.364,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42644,
    "c": 0.19183,
    "h": 272.1
  },
  "luminance": 0.06915
}

Semantic roles & 50–950 ramp

primary

#3139B5

secondary

#C7C27B

accent

#D747E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3139B5

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

Preview Lab → · Contrast checker → · Palette generator →