#2827B4#2827B4

#2827B4 is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 39.4% C 0.211 H 271.5°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#2827B4
RGB	rgb(40, 39, 180)
HSL	hsl(240, 64%, 43%)
HSV	hsv(240, 78%, 71%)
CMYK	cmyk(77.8%, 78.3%, 0%, 29.4%)
CIE-LAB	lab(27.29, 48.16, -72.84)
CIE-LCH	lch(27.29, 87.33, 303.47°)
OKLab	oklab(39.39% 0.0056 -0.2109)
OKLCH	oklch(39.39% 0.211 271.5)
XYZ	xyz(9.8360, 5.1964, 43.6558)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2827B4 #B3B427

analogous

#276CB4 #2827B4 #6F27B4

triadic

#2827B4 #B42827 #27B428

tetradic

#2827B4 #B4276C #B3B427 #27B46F

square

#2827B4 #B4276C #B3B427 #27B46F

split-complementary

#2827B4 #B46F27 #6CB427

monochromatic

#12114F #1D1C82 #2827B4 #4342D6 #7574E1

Accessibility & contrast

On white

10.30

#2827B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#2827B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2827B4

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2827B4	#FFFFFF	#000000	##FFFFFF
##2827B4	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B8

Deuteranopia (green-blind)

#0039B2

Tritanopia (blue-blind)

#00526D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2827b4;
/* rgb */ color: rgb(40, 39, 180);
/* oklch */ color: oklch(39.4% 0.211 271.5);

Tailwind

colors: {
  custom: {
    50: '#7b64cc',
    500: '#2827b4',
    950: '#000000',
  },
}

SCSS

$custom: #2827b4;
$custom-light: #7b64cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2827b4",
  "rgb": {
    "r": 40,
    "g": 39,
    "b": 180
  },
  "hsl": {
    "h": 240.426,
    "s": 64.384,
    "l": 42.941
  },
  "oklch": {
    "l": 0.39393,
    "c": 0.21095,
    "h": 271.5
  },
  "luminance": 0.05197
}

Semantic roles & 50–950 ramp

primary

#2827B4

secondary

#C8C86F

accent

#E740E6

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0614

muted

#7C7A82

Preview Lab

Preview with #2827B4

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

Preview Lab → · Contrast checker → · Palette generator →