#2740AD#2740AD

#2740AD is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.6% C 0.176 H 267.9°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#2740AD
RGB	rgb(39, 64, 173)
HSL	hsl(229, 63%, 42%)
HSV	hsv(229, 77%, 68%)
CMYK	cmyk(77.5%, 63%, 0%, 32.2%)
CIE-LAB	lab(32.07, 30.51, -60.80)
CIE-LCH	lch(32.07, 68.02, 296.65°)
OKLab	oklab(42.62% -0.0065 -0.1758)
OKLCH	oklch(42.62% 0.176 267.9)
XYZ	xyz(10.2103, 7.1141, 40.3621)
Luminance	0.0712 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2740AD #AD9427

analogous

#2783AD #2740AD #5127AD

triadic

#2740AD #AD2740 #40AD27

tetradic

#2740AD #AD2783 #AD9427 #27AD51

square

#2740AD #AD2783 #AD9427 #27AD51

split-complementary

#2740AD #AD5127 #83AD27

monochromatic

#101B49 #1C2E7B #2740AD #3E5AD3 #7084DF

Accessibility & contrast

On white

8.67

#2740AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#2740AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2740AD

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2740AD	#FFFFFF	#000000	##FFFFFF
##2740AD	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B1

Deuteranopia (green-blind)

#0045AB

Tritanopia (blue-blind)

#005C70

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2740ad;
/* rgb */ color: rgb(39, 64, 173);
/* oklch */ color: oklch(42.6% 0.176 267.9);

Tailwind

colors: {
  custom: {
    50: '#7774c6',
    500: '#2740ad',
    950: '#000000',
  },
}

SCSS

$custom: #2740ad;
$custom-light: #7774c6;
$custom-dark: #000000;

JSON

{
  "hex": "#2740ad",
  "rgb": {
    "r": 39,
    "g": 64,
    "b": 173
  },
  "hsl": {
    "h": 228.806,
    "s": 63.208,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42617,
    "c": 0.17593,
    "h": 267.9
  },
  "luminance": 0.07115
}

Semantic roles & 50–950 ramp

primary

#2740AD

secondary

#C6B46A

accent

#C842E6

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2740AD

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

Preview Lab → · Contrast checker → · Palette generator →