#3139B2#3139B2

#3139B2 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.4% C 0.188 H 272.3°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#3139B2
RGB	rgb(49, 57, 178)
HSL	hsl(236, 57%, 45%)
HSV	hsv(236, 72%, 70%)
CMYK	cmyk(72.5%, 68%, 0%, 30.2%)
CIE-LAB	lab(31.33, 37.89, -64.97)
CIE-LCH	lch(31.33, 75.21, 300.25°)
OKLab	oklab(42.36% 0.0075 -0.1878)
OKLCH	oklch(42.36% 0.188 272.3)
XYZ	xyz(10.7629, 6.7925, 42.8547)
Luminance	0.0679 (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

#3139B2 #B2AA31

analogous

#317AB2 #3139B2 #6A31B2

triadic

#3139B2 #B23139 #39B231

tetradic

#3139B2 #B2317A #B2AA31 #31B26A

square

#3139B2 #B2317A #B2AA31 #31B26A

split-complementary

#3139B2 #B26A31 #7AB231

monochromatic

#171A52 #242A82 #3139B2 #5159CF #8187DC

Accessibility & contrast

On white

8.90

#3139B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#3139B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3139B2

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3139B2	#FFFFFF	#000000	##FFFFFF
##3139B2	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B6

Deuteranopia (green-blind)

#0044B0

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3139b2;
/* rgb */ color: rgb(49, 57, 178);
/* oklch */ color: oklch(42.4% 0.188 272.3);

Tailwind

colors: {
  custom: {
    50: '#7c70ca',
    500: '#3139b2',
    950: '#000000',
  },
}

SCSS

$custom: #3139b2;
$custom-light: #7c70ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3139b2",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 178
  },
  "hsl": {
    "h": 236.279,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42355,
    "c": 0.18799,
    "h": 272.3
  },
  "luminance": 0.06794
}

Semantic roles & 50–950 ramp

primary

#3139B2

secondary

#C5C179

accent

#D748E0

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3139B2

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

Preview Lab → · Contrast checker → · Palette generator →