#2740A3#2740A3

#2740A3 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.7% C 0.162 H 267.7°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#2740A3
RGB	rgb(39, 64, 163)
HSL	hsl(228, 61%, 40%)
HSV	hsv(228, 76%, 64%)
CMYK	cmyk(76.1%, 60.7%, 0%, 36.1%)
CIE-LAB	lab(31.21, 26.73, -56.20)
CIE-LCH	lch(31.21, 62.23, 295.44°)
OKLab	oklab(41.72% -0.0064 -0.1623)
OKLCH	oklch(41.72% 0.162 267.7)
XYZ	xyz(9.2787, 6.7415, 35.4555)
Luminance	0.0674 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2740A3 #A38A27

analogous

#277EA3 #2740A3 #4C27A3

triadic

#2740A3 #A32740 #40A327

tetradic

#2740A3 #A3277E #A38A27 #27A34C

square

#2740A3 #A3277E #A38A27 #27A34C

split-complementary

#2740A3 #A34C27 #7EA327

monochromatic

#0F1940 #1B2D72 #2740A3 #3856CF #6980DB

Accessibility & contrast

On white

8.94

#2740A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#2740A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2740A3

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2740A3	#FFFFFF	#000000	##FFFFFF
##2740A3	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA6

Deuteranopia (green-blind)

#0044A1

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #2740a3;
/* rgb */ color: rgb(39, 64, 163);
/* oklch */ color: oklch(41.7% 0.162 267.7);

Tailwind

colors: {
  custom: {
    50: '#7474bf',
    500: '#2740a3',
    950: '#000000',
  },
}

SCSS

$custom: #2740a3;
$custom-light: #7474bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2740a3",
  "rgb": {
    "r": 39,
    "g": 64,
    "b": 163
  },
  "hsl": {
    "h": 227.903,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.41719,
    "c": 0.16245,
    "h": 267.7
  },
  "luminance": 0.06742
}

Semantic roles & 50–950 ramp

primary

#2740A3

secondary

#C1AF64

accent

#C443E4

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2740A3

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

Preview Lab → · Contrast checker → · Palette generator →