#2740A7#2740A7

#2740A7 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.1% C 0.168 H 267.8°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#2740A7
RGB	rgb(39, 64, 167)
HSL	hsl(228, 62%, 40%)
HSV	hsv(228, 77%, 65%)
CMYK	cmyk(76.6%, 61.7%, 0%, 34.5%)
CIE-LAB	lab(31.55, 28.25, -58.05)
CIE-LCH	lch(31.55, 64.56, 295.95°)
OKLab	oklab(42.08% -0.0064 -0.1678)
OKLCH	oklch(42.08% 0.168 267.8)
XYZ	xyz(9.6427, 6.8871, 37.3729)
Luminance	0.0689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2740A7 #A78E27

analogous

#2780A7 #2740A7 #4E27A7

triadic

#2740A7 #A72740 #40A727

tetradic

#2740A7 #A72780 #A78E27 #27A74E

square

#2740A7 #A72780 #A78E27 #27A74E

split-complementary

#2740A7 #A74E27 #80A727

monochromatic

#101A44 #1B2D75 #2740A7 #3A58D1 #6C82DD

Accessibility & contrast

On white

8.83

#2740A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#2740A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2740A7

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2740A7	#FFFFFF	#000000	##FFFFFF
##2740A7	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AA

Deuteranopia (green-blind)

#0044A5

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2740a7;
/* rgb */ color: rgb(39, 64, 167);
/* oklch */ color: oklch(42.1% 0.168 267.8);

Tailwind

colors: {
  custom: {
    50: '#7574c2',
    500: '#2740a7',
    950: '#000000',
  },
}

SCSS

$custom: #2740a7;
$custom-light: #7574c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2740a7",
  "rgb": {
    "r": 39,
    "g": 64,
    "b": 167
  },
  "hsl": {
    "h": 228.281,
    "s": 62.136,
    "l": 40.392
  },
  "oklch": {
    "l": 0.42075,
    "c": 0.16788,
    "h": 267.8
  },
  "luminance": 0.06888
}

Semantic roles & 50–950 ramp

primary

#2740A7

secondary

#C3B167

accent

#C543E5

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2740A7

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

Preview Lab → · Contrast checker → · Palette generator →