#2833A4#2833A4

#2833A4 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.5% C 0.179 H 270.9°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#2833A4
RGB	rgb(40, 51, 164)
HSL	hsl(235, 61%, 40%)
HSV	hsv(235, 76%, 64%)
CMYK	cmyk(75.6%, 68.9%, 0%, 35.7%)
CIE-LAB	lab(28.11, 35.70, -61.88)
CIE-LCH	lch(28.11, 71.44, 299.99°)
OKLab	oklab(39.48% 0.0028 -0.179)
OKLCH	oklch(39.48% 0.179 270.9)
XYZ	xyz(8.7575, 5.4982, 35.7145)
Luminance	0.0550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2833A4 #A49928

analogous

#2871A4 #2833A4 #5B28A4

triadic

#2833A4 #A42833 #33A428

tetradic

#2833A4 #A42871 #A49928 #28A45B

square

#2833A4 #A42871 #A49928 #28A45B

split-complementary

#2833A4 #A45B28 #71A428

monochromatic

#101442 #1C2473 #2833A4 #3A47CF #6B75DB

Accessibility & contrast

On white

10.00

#2833A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#2833A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2833A4

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2833A4	#FFFFFF	#000000	##FFFFFF
##2833A4	1.00	10.00	2.10	10.00
#FFFFFF	10.00	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A7

Deuteranopia (green-blind)

#003CA2

Tritanopia (blue-blind)

#005267

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2833a4;
/* rgb */ color: rgb(40, 51, 164);
/* oklch */ color: oklch(39.5% 0.179 270.9);

Tailwind

colors: {
  custom: {
    50: '#766bc0',
    500: '#2833a4',
    950: '#000000',
  },
}

SCSS

$custom: #2833a4;
$custom-light: #766bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#2833a4",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 164
  },
  "hsl": {
    "h": 234.677,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.39481,
    "c": 0.17906,
    "h": 270.9
  },
  "luminance": 0.05499
}

Semantic roles & 50–950 ramp

primary

#2833A4

secondary

#C1B966

accent

#D644E4

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2833A4

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

Preview Lab → · Contrast checker → · Palette generator →