#2739B0#2739B0

#2739B0 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.6% C 0.188 H 269.2°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#2739B0
RGB	rgb(39, 57, 176)
HSL	hsl(232, 64%, 42%)
HSV	hsv(232, 78%, 69%)
CMYK	cmyk(77.8%, 67.6%, 0%, 31%)
CIE-LAB	lab(30.62, 36.15, -64.96)
CIE-LCH	lch(30.62, 74.34, 299.09°)
OKLab	oklab(41.64% -0.0026 -0.188)
OKLCH	oklch(41.64% 0.188 269.2)
XYZ	xyz(10.1336, 6.4910, 41.7847)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.39

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2739B0 #B09E27

analogous

#277DB0 #2739B0 #5A27B0

triadic

#2739B0 #B02739 #39B027

tetradic

#2739B0 #B0277D #B09E27 #27B05A

square

#2739B0 #B0277D #B09E27 #27B05A

split-complementary

#2739B0 #B05A27 #7DB027

monochromatic

#11194C #1C297E #2739B0 #4053D5 #7280E0

Accessibility & contrast

On white

9.14

#2739B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#2739B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2739B0

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2739B0	#FFFFFF	#000000	##FFFFFF
##2739B0	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB4

Deuteranopia (green-blind)

#0042AE

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #2739b0;
/* rgb */ color: rgb(39, 57, 176);
/* oklch */ color: oklch(41.6% 0.188 269.2);

Tailwind

colors: {
  custom: {
    50: '#786fc9',
    500: '#2739b0',
    950: '#000000',
  },
}

SCSS

$custom: #2739b0;
$custom-light: #786fc9;
$custom-dark: #000000;

JSON

{
  "hex": "#2739b0",
  "rgb": {
    "r": 39,
    "g": 57,
    "b": 176
  },
  "hsl": {
    "h": 232.117,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.4164,
    "c": 0.18806,
    "h": 269.2
  },
  "luminance": 0.06492
}

Semantic roles & 50–950 ramp

primary

#2739B0

secondary

#C7BB6C

accent

#D141E7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2739B0

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

Preview Lab → · Contrast checker → · Palette generator →