#37347B#37347B

#37347B is a dark, moderate blue. Relative luminance 0.047; OKLCH L 37.0% C 0.117 H 280.9°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#37347B
RGB	rgb(55, 52, 123)
HSL	hsl(243, 41%, 34%)
HSV	hsv(243, 58%, 48%)
CMYK	cmyk(55.3%, 57.7%, 0%, 51.8%)
CIE-LAB	lab(25.86, 22.76, -40.19)
CIE-LCH	lch(25.86, 46.19, 299.53°)
OKLab	oklab(37% 0.0222 -0.115)
OKLCH	oklch(37% 0.117 280.9)
XYZ	xyz(6.3776, 4.6979, 19.3058)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37347B #787B34

analogous

#34557B #37347B #5B347B

triadic

#37347B #7B3734 #347B37

tetradic

#37347B #7B3455 #787B34 #347B5B

square

#37347B #7B3455 #787B34 #347B5B

split-complementary

#37347B #7B5B34 #557B34

monochromatic

#111025 #242250 #37347B #4A46A6 #6D6AC0

Accessibility & contrast

On white

10.83

#37347B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#37347B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37347B

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37347B	#FFFFFF	#000000	##FFFFFF
##37347B	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05407D

Deuteranopia (green-blind)

#003B7A

Tritanopia (blue-blind)

#194452

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #37347b;
/* rgb */ color: rgb(55, 52, 123);
/* oklch */ color: oklch(37.0% 0.117 280.9);

Tailwind

colors: {
  custom: {
    50: '#746ba2',
    500: '#37347b',
    950: '#000000',
  },
}

SCSS

$custom: #37347b;
$custom-light: #746ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#37347b",
  "rgb": {
    "r": 55,
    "g": 52,
    "b": 123
  },
  "hsl": {
    "h": 242.535,
    "s": 40.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.37002,
    "c": 0.11712,
    "h": 280.9
  },
  "luminance": 0.04698
}

Semantic roles & 50–950 ramp

primary

#37347B

secondary

#A5A863

accent

#D057CB

background

#F7F6FA

surface

#EDEBF3

border

#C8C6CD

text

#09060F

muted

#7B7A7F

Preview Lab

Preview with #37347B

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

Preview Lab → · Contrast checker → · Palette generator →