#2833B1#2833B1

#2833B1 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.8% C 0.196 H 270.4°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#2833B1
RGB	rgb(40, 51, 177)
HSL	hsl(235, 63%, 43%)
HSV	hsv(235, 77%, 69%)
CMYK	cmyk(77.4%, 71.2%, 0%, 30.6%)
CIE-LAB	lab(29.39, 40.32, -67.58)
CIE-LCH	lch(29.39, 78.69, 300.83°)
OKLab	oklab(40.79% 0.0013 -0.1957)
OKLCH	oklch(40.79% 0.196 270.4)
XYZ	xyz(9.9920, 5.9920, 42.2164)
Luminance	0.0599 (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

#2833B1 #B1A628

analogous

#2878B1 #2833B1 #6128B1

triadic

#2833B1 #B12833 #33B128

tetradic

#2833B1 #B12878 #B1A628 #28B161

square

#2833B1 #B12878 #B1A628 #28B161

split-complementary

#2833B1 #B16128 #78B128

monochromatic

#11164D #1D257F #2833B1 #424ED4 #747CE0

Accessibility & contrast

On white

9.55

#2833B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#2833B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2833B1

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2833B1	#FFFFFF	#000000	##FFFFFF
##2833B1	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB5

Deuteranopia (green-blind)

#003FAF

Tritanopia (blue-blind)

#00566E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2833b1;
/* rgb */ color: rgb(40, 51, 177);
/* oklch */ color: oklch(40.8% 0.196 270.4);

Tailwind

colors: {
  custom: {
    50: '#796bca',
    500: '#2833b1',
    950: '#000000',
  },
}

SCSS

$custom: #2833b1;
$custom-light: #796bca;
$custom-dark: #000000;

JSON

{
  "hex": "#2833b1",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 177
  },
  "hsl": {
    "h": 235.182,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.40795,
    "c": 0.19566,
    "h": 270.4
  },
  "luminance": 0.05993
}

Semantic roles & 50–950 ramp

primary

#2833B1

secondary

#C7C06E

accent

#D942E6

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2833B1

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

Preview Lab → · Contrast checker → · Palette generator →