#2740A1#2740A1

#2740A1 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.5% C 0.160 H 267.7°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#2740A1
RGB	rgb(39, 64, 161)
HSL	hsl(228, 61%, 39%)
HSV	hsv(228, 76%, 63%)
CMYK	cmyk(75.8%, 60.2%, 0%, 36.9%)
CIE-LAB	lab(31.04, 25.97, -55.26)
CIE-LCH	lch(31.04, 61.06, 295.17°)
OKLab	oklab(41.54% -0.0065 -0.1596)
OKLCH	oklch(41.54% 0.16 267.7)
XYZ	xyz(9.1009, 6.6703, 34.5192)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2740A1 #A18827

analogous

#277DA1 #2740A1 #4B27A1

triadic

#2740A1 #A12740 #40A127

tetradic

#2740A1 #A1277D #A18827 #27A14B

square

#2740A1 #A1277D #A18827 #27A14B

split-complementary

#2740A1 #A14B27 #7DA127

monochromatic

#0F193E #1B2C70 #2740A1 #3756CE #687FDA

Accessibility & contrast

On white

9.00

#2740A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#2740A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2740A1

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2740A1	#FFFFFF	#000000	##FFFFFF
##2740A1	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA4

Deuteranopia (green-blind)

#00449F

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #2740a1;
/* rgb */ color: rgb(39, 64, 161);
/* oklch */ color: oklch(41.5% 0.160 267.7);

Tailwind

colors: {
  custom: {
    50: '#7474be',
    500: '#2740a1',
    950: '#000000',
  },
}

SCSS

$custom: #2740a1;
$custom-light: #7474be;
$custom-dark: #000000;

JSON

{
  "hex": "#2740a1",
  "rgb": {
    "r": 39,
    "g": 64,
    "b": 161
  },
  "hsl": {
    "h": 227.705,
    "s": 61,
    "l": 39.216
  },
  "oklch": {
    "l": 0.41543,
    "c": 0.15971,
    "h": 267.7
  },
  "luminance": 0.06671
}

Semantic roles & 50–950 ramp

primary

#2740A1

secondary

#C0AD63

accent

#C344E4

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #2740A1

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

Preview Lab → · Contrast checker → · Palette generator →