#37517A#37517A

#37517A is a dark, moderate blue. Relative luminance 0.081; OKLCH L 43.3% C 0.075 H 259.2°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#37517A
RGB	rgb(55, 81, 122)
HSL	hsl(217, 38%, 35%)
HSV	hsv(217, 55%, 48%)
CMYK	cmyk(54.9%, 33.6%, 0%, 52.2%)
CIE-LAB	lab(34.19, 3.04, -26.29)
CIE-LCH	lch(34.19, 26.46, 276.60°)
OKLab	oklab(43.35% -0.0141 -0.074)
OKLCH	oklch(43.35% 0.075 259.2)
XYZ	xyz(8.0296, 8.1016, 19.5492)
Luminance	0.0810 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37517A #7A6037

analogous

#37737A #37517A #3E377A

triadic

#37517A #7A3751 #517A37

tetradic

#37517A #7A3773 #7A6037 #377A3E

square

#37517A #7A3773 #7A6037 #377A3E

split-complementary

#37517A #7A3E37 #737A37

monochromatic

#111926 #243550 #37517A #4A6DA4 #6E8DBE

Accessibility & contrast

On white

8.01

#37517A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#37517A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37517A

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37517A	#FFFFFF	#000000	##FFFFFF
##37517A	1.00	8.01	2.62	8.01
#FFFFFF	8.01	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#41547C

Deuteranopia (green-blind)

#394E79

Tritanopia (blue-blind)

#145A60

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #37517a;
/* rgb */ color: rgb(55, 81, 122);
/* oklch */ color: oklch(43.3% 0.075 259.2);

Tailwind

colors: {
  custom: {
    50: '#7381a0',
    500: '#37517a',
    950: '#000000',
  },
}

SCSS

$custom: #37517a;
$custom-light: #7381a0;
$custom-dark: #000000;

JSON

{
  "hex": "#37517a",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 122
  },
  "hsl": {
    "h": 216.716,
    "s": 37.853,
    "l": 34.706
  },
  "oklch": {
    "l": 0.43348,
    "c": 0.07535,
    "h": 259.2
  },
  "luminance": 0.08102
}

Semantic roles & 50–950 ramp

primary

#37517A

secondary

#A68E66

accent

#A15ACE

background

#F7F7F9

surface

#EDEEF2

border

#C8C9CC

text

#080A0F

muted

#7B7C7E

Preview Lab

Preview with #37517A

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

Preview Lab → · Contrast checker → · Palette generator →