#2837A2#2837A2

#2837A2 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.0% C 0.172 H 270.2°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#2837A2
RGB	rgb(40, 55, 162)
HSL	hsl(233, 60%, 40%)
HSV	hsv(233, 75%, 64%)
CMYK	cmyk(75.3%, 66%, 0%, 36.5%)
CIE-LAB	lab(28.88, 32.41, -59.41)
CIE-LCH	lch(28.88, 67.67, 298.62°)
OKLab	oklab(39.99% 0.0005 -0.1718)
OKLCH	oklch(39.99% 0.172 270.2)
XYZ	xyz(8.7606, 5.7912, 34.8315)
Luminance	0.0579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2837A2 #A29328

analogous

#2874A2 #2837A2 #5628A2

triadic

#2837A2 #A22837 #37A228

tetradic

#2837A2 #A22874 #A29328 #28A256

square

#2837A2 #A22874 #A29328 #28A256

split-complementary

#2837A2 #A25628 #74A228

monochromatic

#101640 #1C2671 #2837A2 #394BCE #6A78DA

Accessibility & contrast

On white

9.73

#2837A2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#2837A2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2837A2

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2837A2	#FFFFFF	#000000	##FFFFFF
##2837A2	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA5

Deuteranopia (green-blind)

#003EA0

Tritanopia (blue-blind)

#005367

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2837a2;
/* rgb */ color: rgb(40, 55, 162);
/* oklch */ color: oklch(40.0% 0.172 270.2);

Tailwind

colors: {
  custom: {
    50: '#756ebf',
    500: '#2837a2',
    950: '#000000',
  },
}

SCSS

$custom: #2837a2;
$custom-light: #756ebf;
$custom-dark: #000000;

JSON

{
  "hex": "#2837a2",
  "rgb": {
    "r": 40,
    "g": 55,
    "b": 162
  },
  "hsl": {
    "h": 232.623,
    "s": 60.396,
    "l": 39.608
  },
  "oklch": {
    "l": 0.39985,
    "c": 0.17179,
    "h": 270.2
  },
  "luminance": 0.05792
}

Semantic roles & 50–950 ramp

primary

#2837A2

secondary

#C1B565

accent

#D044E4

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2837A2

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

Preview Lab → · Contrast checker → · Palette generator →