#2742B2#2742B2

#2742B2 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.4% C 0.180 H 267.5°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#2742B2
RGB	rgb(39, 66, 178)
HSL	hsl(228, 64%, 43%)
HSV	hsv(228, 78%, 70%)
CMYK	cmyk(78.1%, 62.9%, 0%, 30.2%)
CIE-LAB	lab(33.01, 31.07, -62.23)
CIE-LCH	lch(33.01, 69.56, 296.53°)
OKLab	oklab(43.45% -0.0078 -0.18)
OKLCH	oklch(43.45% 0.18 267.5)
XYZ	xyz(10.8180, 7.5409, 42.9962)
Luminance	0.0754 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2742B2 #B29727

analogous

#2788B2 #2742B2 #5127B2

triadic

#2742B2 #B22742 #42B227

tetradic

#2742B2 #B22788 #B29727 #27B251

square

#2742B2 #B22788 #B29727 #27B251

split-complementary

#2742B2 #B25127 #88B227

monochromatic

#111D4E #1C2F80 #2742B2 #415ED5 #7388E0

Accessibility & contrast

On white

8.37

#2742B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#2742B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2742B2

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2742B2	#FFFFFF	#000000	##FFFFFF
##2742B2	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B6

Deuteranopia (green-blind)

#0047B0

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2742b2;
/* rgb */ color: rgb(39, 66, 178);
/* oklch */ color: oklch(43.4% 0.180 267.5);

Tailwind

colors: {
  custom: {
    50: '#7876ca',
    500: '#2742b2',
    950: '#000000',
  },
}

SCSS

$custom: #2742b2;
$custom-light: #7876ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2742b2",
  "rgb": {
    "r": 39,
    "g": 66,
    "b": 178
  },
  "hsl": {
    "h": 228.345,
    "s": 64.055,
    "l": 42.549
  },
  "oklch": {
    "l": 0.43449,
    "c": 0.18017,
    "h": 267.5
  },
  "luminance": 0.07542
}

Semantic roles & 50–950 ramp

primary

#2742B2

secondary

#C8B66D

accent

#C741E7

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2742B2

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

Preview Lab → · Contrast checker → · Palette generator →