#2833B3#2833B3

#2833B3 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 41.0% C 0.198 H 270.3°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#2833B3
RGB	rgb(40, 51, 179)
HSL	hsl(235, 63%, 43%)
HSV	hsv(235, 78%, 70%)
CMYK	cmyk(77.7%, 71.5%, 0%, 29.8%)
CIE-LAB	lab(29.59, 41.02, -68.44)
CIE-LCH	lch(29.59, 79.79, 300.94°)
OKLab	oklab(41% 0.001 -0.1982)
OKLCH	oklch(41% 0.198 270.3)
XYZ	xyz(10.1928, 6.0723, 43.2740)
Luminance	0.0607 (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

#2833B3 #B3A828

analogous

#2878B3 #2833B3 #6328B3

triadic

#2833B3 #B32833 #33B328

tetradic

#2833B3 #B32878 #B3A828 #28B363

square

#2833B3 #B32878 #B3A828 #28B363

split-complementary

#2833B3 #B36328 #78B328

monochromatic

#12164F #1D2581 #2833B3 #434FD5 #757EE0

Accessibility & contrast

On white

9.48

#2833B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#2833B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2833B3

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2833B3	#FFFFFF	#000000	##FFFFFF
##2833B3	1.00	9.48	2.21	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB7

Deuteranopia (green-blind)

#003FB1

Tritanopia (blue-blind)

#00576F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2833b3;
/* rgb */ color: rgb(40, 51, 179);
/* oklch */ color: oklch(41.0% 0.198 270.3);

Tailwind

colors: {
  custom: {
    50: '#7a6bcb',
    500: '#2833b3',
    950: '#000000',
  },
}

SCSS

$custom: #2833b3;
$custom-light: #7a6bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#2833b3",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 179
  },
  "hsl": {
    "h": 235.252,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.41,
    "c": 0.19816,
    "h": 270.3
  },
  "luminance": 0.06073
}

Semantic roles & 50–950 ramp

primary

#2833B3

secondary

#C8C16F

accent

#D941E6

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2833B3

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

Preview Lab → · Contrast checker → · Palette generator →