#2739A3#2739A3

#2739A3 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.4% C 0.171 H 269.4°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#2739A3
RGB	rgb(39, 57, 163)
HSL	hsl(231, 61%, 40%)
HSV	hsv(231, 76%, 64%)
CMYK	cmyk(76.1%, 65%, 0%, 36.1%)
CIE-LAB	lab(29.41, 31.37, -59.13)
CIE-LCH	lch(29.41, 66.94, 297.94°)
OKLab	oklab(40.39% -0.0018 -0.171)
OKLCH	oklch(40.39% 0.171 269.4)
XYZ	xyz(8.9084, 6.0010, 35.3320)
Luminance	0.0600 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2739A3 #A39127

analogous

#2777A3 #2739A3 #5327A3

triadic

#2739A3 #A32739 #39A327

tetradic

#2739A3 #A32777 #A39127 #27A353

square

#2739A3 #A32777 #A39127 #27A353

split-complementary

#2739A3 #A35327 #77A327

monochromatic

#0F1640 #1B2872 #2739A3 #384ECF #697ADB

Accessibility & contrast

On white

9.54

#2739A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#2739A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2739A3

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2739A3	#FFFFFF	#000000	##FFFFFF
##2739A3	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA6

Deuteranopia (green-blind)

#0040A1

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2739a3;
/* rgb */ color: rgb(39, 57, 163);
/* oklch */ color: oklch(40.4% 0.171 269.4);

Tailwind

colors: {
  custom: {
    50: '#756fbf',
    500: '#2739a3',
    950: '#000000',
  },
}

SCSS

$custom: #2739a3;
$custom-light: #756fbf;
$custom-dark: #000000;

JSON

{
  "hex": "#2739a3",
  "rgb": {
    "r": 39,
    "g": 57,
    "b": 163
  },
  "hsl": {
    "h": 231.29,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.40391,
    "c": 0.17101,
    "h": 269.4
  },
  "luminance": 0.06002
}

Semantic roles & 50–950 ramp

primary

#2739A3

secondary

#C1B464

accent

#CD43E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2739A3

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

Preview Lab → · Contrast checker → · Palette generator →