#2740A4#2740A4

#2740A4 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.8% C 0.164 H 267.8°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#2740A4
RGB	rgb(39, 64, 164)
HSL	hsl(228, 62%, 40%)
HSV	hsv(228, 76%, 64%)
CMYK	cmyk(76.2%, 61%, 0%, 35.7%)
CIE-LAB	lab(31.29, 27.11, -56.66)
CIE-LCH	lch(31.29, 62.81, 295.57°)
OKLab	oklab(41.81% -0.0064 -0.1637)
OKLCH	oklch(41.81% 0.164 267.8)
XYZ	xyz(9.3686, 6.7774, 35.9292)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2740A4 #A48B27

analogous

#277FA4 #2740A4 #4D27A4

triadic

#2740A4 #A42740 #40A427

tetradic

#2740A4 #A4277F #A48B27 #27A44D

square

#2740A4 #A4277F #A48B27 #27A44D

split-complementary

#2740A4 #A44D27 #7FA427

monochromatic

#0F1941 #1B2D73 #2740A4 #3857D0 #6A81DC

Accessibility & contrast

On white

8.91

#2740A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#2740A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2740A4

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2740A4	#FFFFFF	#000000	##FFFFFF
##2740A4	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A7

Deuteranopia (green-blind)

#0044A2

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2740a4;
/* rgb */ color: rgb(39, 64, 164);
/* oklch */ color: oklch(41.8% 0.164 267.8);

Tailwind

colors: {
  custom: {
    50: '#7574c0',
    500: '#2740a4',
    950: '#000000',
  },
}

SCSS

$custom: #2740a4;
$custom-light: #7574c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2740a4",
  "rgb": {
    "r": 39,
    "g": 64,
    "b": 164
  },
  "hsl": {
    "h": 228,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41808,
    "c": 0.16382,
    "h": 267.8
  },
  "luminance": 0.06778
}

Semantic roles & 50–950 ramp

primary

#2740A4

secondary

#C2AF65

accent

#C443E5

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2740A4

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

Preview Lab → · Contrast checker → · Palette generator →