#2740A5#2740A5

#2740A5 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.9% C 0.165 H 267.8°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#2740A5
RGB	rgb(39, 64, 165)
HSL	hsl(228, 62%, 40%)
HSV	hsv(228, 76%, 65%)
CMYK	cmyk(76.4%, 61.2%, 0%, 35.3%)
CIE-LAB	lab(31.38, 27.49, -57.13)
CIE-LCH	lch(31.38, 63.40, 295.70°)
OKLab	oklab(41.9% -0.0064 -0.165)
OKLCH	oklch(41.9% 0.165 267.8)
XYZ	xyz(9.4593, 6.8137, 36.4067)
Luminance	0.0682 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2740A5 #A58C27

analogous

#277FA5 #2740A5 #4D27A5

triadic

#2740A5 #A52740 #40A527

tetradic

#2740A5 #A5277F #A58C27 #27A54D

square

#2740A5 #A5277F #A58C27 #27A54D

split-complementary

#2740A5 #A54D27 #7FA527

monochromatic

#101A42 #1B2D74 #2740A5 #3957D0 #6A81DC

Accessibility & contrast

On white

8.89

#2740A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#2740A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2740A5

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2740A5	#FFFFFF	#000000	##FFFFFF
##2740A5	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A8

Deuteranopia (green-blind)

#0044A3

Tritanopia (blue-blind)

#005A6C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2740a5;
/* rgb */ color: rgb(39, 64, 165);
/* oklch */ color: oklch(41.9% 0.165 267.8);

Tailwind

colors: {
  custom: {
    50: '#7574c1',
    500: '#2740a5',
    950: '#000000',
  },
}

SCSS

$custom: #2740a5;
$custom-light: #7574c1;
$custom-dark: #000000;

JSON

{
  "hex": "#2740a5",
  "rgb": {
    "r": 39,
    "g": 64,
    "b": 165
  },
  "hsl": {
    "h": 228.095,
    "s": 61.765,
    "l": 40
  },
  "oklch": {
    "l": 0.41896,
    "c": 0.16518,
    "h": 267.8
  },
  "luminance": 0.06815
}

Semantic roles & 50–950 ramp

primary

#2740A5

secondary

#C2B066

accent

#C543E5

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2740A5

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

Preview Lab → · Contrast checker → · Palette generator →