#2745B3#2745B3

#2745B3 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.1% C 0.178 H 266.9°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#2745B3
RGB	rgb(39, 69, 179)
HSL	hsl(227, 64%, 43%)
HSV	hsv(227, 78%, 70%)
CMYK	cmyk(78.2%, 61.5%, 0%, 29.8%)
CIE-LAB	lab(33.86, 29.48, -61.43)
CIE-LCH	lch(33.86, 68.14, 295.63°)
OKLab	oklab(44.11% -0.0097 -0.1776)
OKLCH	oklch(44.11% 0.178 266.9)
XYZ	xyz(11.0987, 7.9410, 43.5869)
Luminance	0.0794 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2745B3 #B39527

analogous

#278BB3 #2745B3 #4F27B3

triadic

#2745B3 #B32745 #45B327

tetradic

#2745B3 #B3278B #B39527 #27B34F

square

#2745B3 #B3278B #B39527 #27B34F

split-complementary

#2745B3 #B34F27 #8BB327

monochromatic

#111E4E #1C3281 #2745B3 #4161D6 #748BE1

Accessibility & contrast

On white

8.11

#2745B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#2745B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2745B3

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2745B3	#FFFFFF	#000000	##FFFFFF
##2745B3	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B7

Deuteranopia (green-blind)

#0049B1

Tritanopia (blue-blind)

#006175

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #2745b3;
/* rgb */ color: rgb(39, 69, 179);
/* oklch */ color: oklch(44.1% 0.178 266.9);

Tailwind

colors: {
  custom: {
    50: '#7878cb',
    500: '#2745b3',
    950: '#000000',
  },
}

SCSS

$custom: #2745b3;
$custom-light: #7878cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2745b3",
  "rgb": {
    "r": 39,
    "g": 69,
    "b": 179
  },
  "hsl": {
    "h": 227.143,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.44106,
    "c": 0.17788,
    "h": 266.9
  },
  "luminance": 0.07942
}

Semantic roles & 50–950 ramp

primary

#2745B3

secondary

#C8B56E

accent

#C441E7

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #2745B3

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

Preview Lab → · Contrast checker → · Palette generator →