#2739B1#2739B1

#2739B1 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.7% C 0.189 H 269.2°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#2739B1
RGB	rgb(39, 57, 177)
HSL	hsl(232, 64%, 42%)
HSV	hsv(232, 78%, 69%)
CMYK	cmyk(78%, 67.8%, 0%, 30.6%)
CIE-LAB	lab(30.71, 36.51, -65.40)
CIE-LCH	lch(30.71, 74.90, 299.17°)
OKLab	oklab(41.74% -0.0027 -0.1893)
OKLCH	oklch(41.74% 0.189 269.2)
XYZ	xyz(10.2329, 6.5308, 42.3077)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.29

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2739B1 #B19F27

analogous

#277EB1 #2739B1 #5A27B1

triadic

#2739B1 #B12739 #39B127

tetradic

#2739B1 #B1277E #B19F27 #27B15A

square

#2739B1 #B1277E #B19F27 #27B15A

split-complementary

#2739B1 #B15A27 #7EB127

monochromatic

#11194D #1C297F #2739B1 #4054D5 #7281E0

Accessibility & contrast

On white

9.11

#2739B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#2739B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2739B1

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2739B1	#FFFFFF	#000000	##FFFFFF
##2739B1	1.00	9.11	2.31	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB5

Deuteranopia (green-blind)

#0042AF

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #2739b1;
/* rgb */ color: rgb(39, 57, 177);
/* oklch */ color: oklch(41.7% 0.189 269.2);

Tailwind

colors: {
  custom: {
    50: '#786fc9',
    500: '#2739b1',
    950: '#000000',
  },
}

SCSS

$custom: #2739b1;
$custom-light: #786fc9;
$custom-dark: #000000;

JSON

{
  "hex": "#2739b1",
  "rgb": {
    "r": 39,
    "g": 57,
    "b": 177
  },
  "hsl": {
    "h": 232.174,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.41738,
    "c": 0.18935,
    "h": 269.2
  },
  "luminance": 0.06532
}

Semantic roles & 50–950 ramp

primary

#2739B1

secondary

#C7BB6D

accent

#D141E7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2739B1

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

Preview Lab → · Contrast checker → · Palette generator →