#2847B5#2847B5

#2847B5 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.7% C 0.178 H 266.7°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#2847B5
RGB	rgb(40, 71, 181)
HSL	hsl(227, 64%, 43%)
HSV	hsv(227, 78%, 71%)
CMYK	cmyk(77.9%, 60.8%, 0%, 29%)
CIE-LAB	lab(34.58, 29.02, -61.43)
CIE-LCH	lch(34.58, 67.94, 295.28°)
OKLab	oklab(44.71% -0.0101 -0.1776)
OKLCH	oklch(44.71% 0.178 266.7)
XYZ	xyz(11.4659, 8.2925, 44.7034)
Luminance	0.0829 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2847B5 #B59628

analogous

#288DB5 #2847B5 #5028B5

triadic

#2847B5 #B52847 #47B528

tetradic

#2847B5 #B5288D #B59628 #28B550

square

#2847B5 #B5288D #B59628 #28B550

split-complementary

#2847B5 #B55028 #8DB528

monochromatic

#122051 #1D3383 #2847B5 #4464D6 #778EE1

Accessibility & contrast

On white

7.90

#2847B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#2847B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2847B5

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2847B5	#FFFFFF	#000000	##FFFFFF
##2847B5	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B9

Deuteranopia (green-blind)

#004BB3

Tritanopia (blue-blind)

#006377

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #2847b5;
/* rgb */ color: rgb(40, 71, 181);
/* oklch */ color: oklch(44.7% 0.178 266.7);

Tailwind

colors: {
  custom: {
    50: '#7879cc',
    500: '#2847b5',
    950: '#000000',
  },
}

SCSS

$custom: #2847b5;
$custom-light: #7879cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2847b5",
  "rgb": {
    "r": 40,
    "g": 71,
    "b": 181
  },
  "hsl": {
    "h": 226.809,
    "s": 63.801,
    "l": 43.333
  },
  "oklch": {
    "l": 0.44709,
    "c": 0.17786,
    "h": 266.7
  },
  "luminance": 0.08294
}

Semantic roles & 50–950 ramp

primary

#2847B5

secondary

#C8B570

accent

#C241E7

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #2847B5

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

Preview Lab → · Contrast checker → · Palette generator →