#2739A8#2739A8

#2739A8 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.9% C 0.178 H 269.3°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#2739A8
RGB	rgb(39, 57, 168)
HSL	hsl(232, 62%, 41%)
HSV	hsv(232, 77%, 66%)
CMYK	cmyk(76.8%, 66.1%, 0%, 34.1%)
CIE-LAB	lab(29.87, 33.22, -61.40)
CIE-LCH	lch(29.87, 69.81, 298.41°)
OKLab	oklab(40.87% -0.0021 -0.1776)
OKLCH	oklch(40.87% 0.178 269.3)
XYZ	xyz(9.3653, 6.1837, 37.7382)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2739A8 #A89627

analogous

#2779A8 #2739A8 #5527A8

triadic

#2739A8 #A82739 #39A827

tetradic

#2739A8 #A82779 #A89627 #27A855

square

#2739A8 #A82779 #A89627 #27A855

split-complementary

#2739A8 #A85527 #79A827

monochromatic

#101745 #1B2876 #2739A8 #3B50D1 #6C7CDD

Accessibility & contrast

On white

9.39

#2739A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#2739A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2739A8

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2739A8	#FFFFFF	#000000	##FFFFFF
##2739A8	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAB

Deuteranopia (green-blind)

#0040A6

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2739a8;
/* rgb */ color: rgb(39, 57, 168);
/* oklch */ color: oklch(40.9% 0.178 269.3);

Tailwind

colors: {
  custom: {
    50: '#766fc3',
    500: '#2739a8',
    950: '#000000',
  },
}

SCSS

$custom: #2739a8;
$custom-light: #766fc3;
$custom-dark: #000000;

JSON

{
  "hex": "#2739a8",
  "rgb": {
    "r": 39,
    "g": 57,
    "b": 168
  },
  "hsl": {
    "h": 231.628,
    "s": 62.319,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40866,
    "c": 0.17764,
    "h": 269.3
  },
  "luminance": 0.06185
}

Semantic roles & 50–950 ramp

primary

#2739A8

secondary

#C3B767

accent

#CF42E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2739A8

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

Preview Lab → · Contrast checker → · Palette generator →