#2838B0#2838B0

#2838B0 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.5% C 0.189 H 269.7°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#2838B0
RGB	rgb(40, 56, 176)
HSL	hsl(233, 63%, 42%)
HSV	hsv(233, 77%, 69%)
CMYK	cmyk(77.3%, 68.2%, 0%, 31%)
CIE-LAB	lab(30.43, 36.87, -65.27)
CIE-LCH	lch(30.43, 74.96, 299.46°)
OKLab	oklab(41.52% -0.0011 -0.1889)
OKLCH	oklch(41.52% 0.189 269.7)
XYZ	xyz(10.1230, 6.4129, 41.7702)
Luminance	0.0641 (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

#2838B0 #B0A028

analogous

#287CB0 #2838B0 #5C28B0

triadic

#2838B0 #B02838 #38B028

tetradic

#2838B0 #B0287C #B0A028 #28B05C

square

#2838B0 #B0287C #B0A028 #28B05C

split-complementary

#2838B0 #B05C28 #7CB028

monochromatic

#11184C #1D287E #2838B0 #4153D4 #7380DF

Accessibility & contrast

On white

9.20

#2838B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#2838B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2838B0

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2838B0	#FFFFFF	#000000	##FFFFFF
##2838B0	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB4

Deuteranopia (green-blind)

#0041AE

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #2838b0;
/* rgb */ color: rgb(40, 56, 176);
/* oklch */ color: oklch(41.5% 0.189 269.7);

Tailwind

colors: {
  custom: {
    50: '#796fc9',
    500: '#2838b0',
    950: '#000000',
  },
}

SCSS

$custom: #2838b0;
$custom-light: #796fc9;
$custom-dark: #000000;

JSON

{
  "hex": "#2838b0",
  "rgb": {
    "r": 40,
    "g": 56,
    "b": 176
  },
  "hsl": {
    "h": 232.941,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.41516,
    "c": 0.18892,
    "h": 269.7
  },
  "luminance": 0.06414
}

Semantic roles & 50–950 ramp

primary

#2838B0

secondary

#C6BC6D

accent

#D342E6

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2838B0

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

Preview Lab → · Contrast checker → · Palette generator →