#2740AA#2740AA

#2740AA is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.3% C 0.172 H 267.9°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#2740AA
RGB	rgb(39, 64, 170)
HSL	hsl(229, 63%, 41%)
HSV	hsv(229, 77%, 67%)
CMYK	cmyk(77.1%, 62.4%, 0%, 33.3%)
CIE-LAB	lab(31.81, 29.38, -59.43)
CIE-LCH	lch(31.81, 66.30, 296.31°)
OKLab	oklab(42.35% -0.0064 -0.1718)
OKLCH	oklch(42.35% 0.172 267.9)
XYZ	xyz(9.9233, 6.9993, 38.8504)
Luminance	0.0700 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2740AA #AA9127

analogous

#2781AA #2740AA #5027AA

triadic

#2740AA #AA2740 #40AA27

tetradic

#2740AA #AA2781 #AA9127 #27AA50

square

#2740AA #AA2781 #AA9127 #27AA50

split-complementary

#2740AA #AA5027 #81AA27

monochromatic

#101B46 #1C2D78 #2740AA #3C59D2 #6E83DE

Accessibility & contrast

On white

8.75

#2740AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#2740AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2740AA

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2740AA	#FFFFFF	#000000	##FFFFFF
##2740AA	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AD

Deuteranopia (green-blind)

#0045A8

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2740aa;
/* rgb */ color: rgb(39, 64, 170);
/* oklch */ color: oklch(42.3% 0.172 267.9);

Tailwind

colors: {
  custom: {
    50: '#7674c4',
    500: '#2740aa',
    950: '#000000',
  },
}

SCSS

$custom: #2740aa;
$custom-light: #7674c4;
$custom-dark: #000000;

JSON

{
  "hex": "#2740aa",
  "rgb": {
    "r": 39,
    "g": 64,
    "b": 170
  },
  "hsl": {
    "h": 228.55,
    "s": 62.679,
    "l": 40.98
  },
  "oklch": {
    "l": 0.42345,
    "c": 0.17193,
    "h": 267.9
  },
  "luminance": 0.07
}

Semantic roles & 50–950 ramp

primary

#2740AA

secondary

#C4B369

accent

#C742E6

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2740AA

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

Preview Lab → · Contrast checker → · Palette generator →