#2740AE#2740AE

#2740AE is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.7% C 0.177 H 267.9°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#2740AE
RGB	rgb(39, 64, 174)
HSL	hsl(229, 63%, 42%)
HSV	hsv(229, 78%, 68%)
CMYK	cmyk(77.6%, 63.2%, 0%, 31.8%)
CIE-LAB	lab(32.15, 30.88, -61.25)
CIE-LCH	lch(32.15, 68.60, 296.76°)
OKLab	oklab(42.71% -0.0065 -0.1771)
OKLCH	oklch(42.71% 0.177 267.9)
XYZ	xyz(10.3074, 7.1530, 40.8736)
Luminance	0.0715 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2740AE #AE9527

analogous

#2784AE #2740AE #5227AE

triadic

#2740AE #AE2740 #40AE27

tetradic

#2740AE #AE2784 #AE9527 #27AE52

square

#2740AE #AE2784 #AE9527 #27AE52

split-complementary

#2740AE #AE5227 #84AE27

monochromatic

#111B4A #1C2E7C #2740AE #3E5AD4 #7085DF

Accessibility & contrast

On white

8.64

#2740AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#2740AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2740AE

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2740AE	#FFFFFF	#000000	##FFFFFF
##2740AE	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B2

Deuteranopia (green-blind)

#0045AC

Tritanopia (blue-blind)

#005D71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2740ae;
/* rgb */ color: rgb(39, 64, 174);
/* oklch */ color: oklch(42.7% 0.177 267.9);

Tailwind

colors: {
  custom: {
    50: '#7774c7',
    500: '#2740ae',
    950: '#000000',
  },
}

SCSS

$custom: #2740ae;
$custom-light: #7774c7;
$custom-dark: #000000;

JSON

{
  "hex": "#2740ae",
  "rgb": {
    "r": 39,
    "g": 64,
    "b": 174
  },
  "hsl": {
    "h": 228.889,
    "s": 63.38,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42709,
    "c": 0.17726,
    "h": 267.9
  },
  "luminance": 0.07154
}

Semantic roles & 50–950 ramp

primary

#2740AE

secondary

#C6B56B

accent

#C841E6

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2740AE

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

Preview Lab → · Contrast checker → · Palette generator →