#2748B3#2748B3

#2748B3 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.7% C 0.174 H 266.2°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#2748B3
RGB	rgb(39, 72, 179)
HSL	hsl(226, 64%, 43%)
HSV	hsv(226, 78%, 70%)
CMYK	cmyk(78.2%, 59.8%, 0%, 29.8%)
CIE-LAB	lab(34.64, 27.50, -60.16)
CIE-LCH	lch(34.64, 66.15, 294.56°)
OKLab	oklab(44.69% -0.0116 -0.1738)
OKLCH	oklch(44.69% 0.174 266.2)
XYZ	xyz(11.2879, 8.3194, 43.6500)
Luminance	0.0832 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2748B3 #B39227

analogous

#278EB3 #2748B3 #4C27B3

triadic

#2748B3 #B32748 #48B327

tetradic

#2748B3 #B3278E #B39227 #27B34C

square

#2748B3 #B3278E #B39227 #27B34C

split-complementary

#2748B3 #B34C27 #8EB327

monochromatic

#11204E #1C3481 #2748B3 #4164D6 #748DE1

Accessibility & contrast

On white

7.88

#2748B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#2748B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2748B3

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2748B3	#FFFFFF	#000000	##FFFFFF
##2748B3	1.00	7.88	2.66	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B7

Deuteranopia (green-blind)

#004BB1

Tritanopia (blue-blind)

#006376

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #2748b3;
/* rgb */ color: rgb(39, 72, 179);
/* oklch */ color: oklch(44.7% 0.174 266.2);

Tailwind

colors: {
  custom: {
    50: '#787acb',
    500: '#2748b3',
    950: '#000000',
  },
}

SCSS

$custom: #2748b3;
$custom-light: #787acb;
$custom-dark: #000000;

JSON

{
  "hex": "#2748b3",
  "rgb": {
    "r": 39,
    "g": 72,
    "b": 179
  },
  "hsl": {
    "h": 225.857,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.44687,
    "c": 0.17423,
    "h": 266.2
  },
  "luminance": 0.08321
}

Semantic roles & 50–950 ramp

primary

#2748B3

secondary

#C8B36E

accent

#C041E7

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #2748B3

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

Preview Lab → · Contrast checker → · Palette generator →