#2749B3#2749B3

#2749B3 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.9% C 0.173 H 265.9°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#2749B3
RGB	rgb(39, 73, 179)
HSL	hsl(225, 64%, 43%)
HSV	hsv(225, 78%, 70%)
CMYK	cmyk(78.2%, 59.2%, 0%, 29.8%)
CIE-LAB	lab(34.90, 26.83, -59.73)
CIE-LCH	lch(34.90, 65.48, 294.19°)
OKLab	oklab(44.88% -0.0122 -0.1726)
OKLCH	oklch(44.88% 0.173 265.9)
XYZ	xyz(11.3531, 8.4498, 43.6717)
Luminance	0.0845 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2749B3 #B39127

analogous

#278FB3 #2749B3 #4B27B3

triadic

#2749B3 #B32749 #49B327

tetradic

#2749B3 #B3278F #B39127 #27B34B

square

#2749B3 #B3278F #B39127 #27B34B

split-complementary

#2749B3 #B34B27 #8FB327

monochromatic

#11204E #1C3581 #2749B3 #4165D6 #748EE1

Accessibility & contrast

On white

7.81

#2749B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#2749B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2749B3

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2749B3	#FFFFFF	#000000	##FFFFFF
##2749B3	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B7

Deuteranopia (green-blind)

#004CB1

Tritanopia (blue-blind)

#006477

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #2749b3;
/* rgb */ color: rgb(39, 73, 179);
/* oklch */ color: oklch(44.9% 0.173 265.9);

Tailwind

colors: {
  custom: {
    50: '#787bcb',
    500: '#2749b3',
    950: '#000000',
  },
}

SCSS

$custom: #2749b3;
$custom-light: #787bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#2749b3",
  "rgb": {
    "r": 39,
    "g": 73,
    "b": 179
  },
  "hsl": {
    "h": 225.429,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.44883,
    "c": 0.173,
    "h": 265.9
  },
  "luminance": 0.08451
}

Semantic roles & 50–950 ramp

primary

#2749B3

secondary

#C8B26E

accent

#BF41E7

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #2749B3

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

Preview Lab → · Contrast checker → · Palette generator →