#37289A#37289A

#37289A is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.8% C 0.175 H 279.9°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#37289A
RGB	rgb(55, 40, 154)
HSL	hsl(248, 59%, 38%)
HSV	hsv(248, 74%, 60%)
CMYK	cmyk(64.3%, 74%, 0%, 39.6%)
CIE-LAB	lab(25.75, 40.66, -59.64)
CIE-LCH	lch(25.75, 72.18, 304.29°)
OKLab	oklab(37.76% 0.0301 -0.1721)
OKLCH	oklch(37.76% 0.175 279.9)
XYZ	xyz(8.1652, 4.6623, 31.0352)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37289A #8B9A28

analogous

#28529A #37289A #70289A

triadic

#37289A #9A3728 #289A37

tetradic

#37289A #9A2852 #8B9A28 #289A70

square

#37289A #9A2852 #8B9A28 #289A70

split-complementary

#37289A #9A7028 #529A28

monochromatic

#140F39 #261B69 #37289A #4835CA #7465D7

Accessibility & contrast

On white

10.87

#37289A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#37289A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37289A

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37289A	#FFFFFF	#000000	##FFFFFF
##37289A	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00419D

Deuteranopia (green-blind)

#003998

Tritanopia (blue-blind)

#00485E

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #37289a;
/* rgb */ color: rgb(55, 40, 154);
/* oklch */ color: oklch(37.8% 0.175 279.9);

Tailwind

colors: {
  custom: {
    50: '#7b64b9',
    500: '#37289a',
    950: '#000000',
  },
}

SCSS

$custom: #37289a;
$custom-light: #7b64b9;
$custom-dark: #000000;

JSON

{
  "hex": "#37289a",
  "rgb": {
    "r": 55,
    "g": 40,
    "b": 154
  },
  "hsl": {
    "h": 247.895,
    "s": 58.763,
    "l": 38.039
  },
  "oklch": {
    "l": 0.37759,
    "c": 0.17469,
    "h": 279.9
  },
  "luminance": 0.04663
}

Semantic roles & 50–950 ramp

primary

#37289A

secondary

#B1BD61

accent

#E246CD

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0512

muted

#7C7A81

Preview Lab

Preview with #37289A

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

Preview Lab → · Contrast checker → · Palette generator →