#2739A4#2739A4

#2739A4 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.5% C 0.172 H 269.4°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#2739A4
RGB	rgb(39, 57, 164)
HSL	hsl(231, 62%, 40%)
HSV	hsv(231, 76%, 64%)
CMYK	cmyk(76.2%, 65.2%, 0%, 35.7%)
CIE-LAB	lab(29.51, 31.74, -59.59)
CIE-LCH	lch(29.51, 67.51, 298.04°)
OKLab	oklab(40.49% -0.0018 -0.1723)
OKLCH	oklch(40.49% 0.172 269.4)
XYZ	xyz(8.9984, 6.0370, 35.8058)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2739A4 #A49227

analogous

#2778A4 #2739A4 #5427A4

triadic

#2739A4 #A42739 #39A427

tetradic

#2739A4 #A42778 #A49227 #27A454

square

#2739A4 #A42778 #A49227 #27A454

split-complementary

#2739A4 #A45427 #78A427

monochromatic

#0F1741 #1B2873 #2739A4 #384ED0 #6A7ADC

Accessibility & contrast

On white

9.51

#2739A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#2739A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2739A4

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2739A4	#FFFFFF	#000000	##FFFFFF
##2739A4	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA7

Deuteranopia (green-blind)

#0040A2

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2739a4;
/* rgb */ color: rgb(39, 57, 164);
/* oklch */ color: oklch(40.5% 0.172 269.4);

Tailwind

colors: {
  custom: {
    50: '#756fc0',
    500: '#2739a4',
    950: '#000000',
  },
}

SCSS

$custom: #2739a4;
$custom-light: #756fc0;
$custom-dark: #000000;

JSON

{
  "hex": "#2739a4",
  "rgb": {
    "r": 39,
    "g": 57,
    "b": 164
  },
  "hsl": {
    "h": 231.36,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40486,
    "c": 0.17235,
    "h": 269.4
  },
  "luminance": 0.06038
}

Semantic roles & 50–950 ramp

primary

#2739A4

secondary

#C2B465

accent

#CD43E5

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2739A4

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

Preview Lab → · Contrast checker → · Palette generator →