#2839B1#2839B1

#2839B1 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.189 H 269.5°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#2839B1
RGB	rgb(40, 57, 177)
HSL	hsl(233, 63%, 43%)
HSV	hsv(233, 77%, 69%)
CMYK	cmyk(77.4%, 67.8%, 0%, 30.6%)
CIE-LAB	lab(30.76, 36.60, -65.32)
CIE-LCH	lch(30.76, 74.88, 299.26°)
OKLab	oklab(41.79% -0.0017 -0.1891)
OKLCH	oklch(41.79% 0.189 269.5)
XYZ	xyz(10.2713, 6.5506, 42.3095)
Luminance	0.0655 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2839B1 #B1A028

analogous

#287DB1 #2839B1 #5C28B1

triadic

#2839B1 #B12839 #39B128

tetradic

#2839B1 #B1287D #B1A028 #28B15C

square

#2839B1 #B1287D #B1A028 #28B15C

split-complementary

#2839B1 #B15C28 #7DB128

monochromatic

#11194D #1D297F #2839B1 #4254D4 #7481E0

Accessibility & contrast

On white

9.09

#2839B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#2839B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2839B1

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2839B1	#FFFFFF	#000000	##FFFFFF
##2839B1	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB5

Deuteranopia (green-blind)

#0042AF

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #2839b1;
/* rgb */ color: rgb(40, 57, 177);
/* oklch */ color: oklch(41.8% 0.189 269.5);

Tailwind

colors: {
  custom: {
    50: '#796fc9',
    500: '#2839b1',
    950: '#000000',
  },
}

SCSS

$custom: #2839b1;
$custom-light: #796fc9;
$custom-dark: #000000;

JSON

{
  "hex": "#2839b1",
  "rgb": {
    "r": 40,
    "g": 57,
    "b": 177
  },
  "hsl": {
    "h": 232.555,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.41785,
    "c": 0.18909,
    "h": 269.5
  },
  "luminance": 0.06552
}

Semantic roles & 50–950 ramp

primary

#2839B1

secondary

#C7BC6E

accent

#D242E6

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2839B1

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

Preview Lab → · Contrast checker → · Palette generator →