#37517C#37517C

#37517C is a dark, moderate blue. Relative luminance 0.082; OKLCH L 43.5% C 0.078 H 260.1°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#37517C
RGB	rgb(55, 81, 124)
HSL	hsl(217, 39%, 35%)
HSV	hsv(217, 56%, 49%)
CMYK	cmyk(55.6%, 34.7%, 0%, 51.4%)
CIE-LAB	lab(34.30, 3.73, -27.36)
CIE-LCH	lch(34.30, 27.62, 277.76°)
OKLab	oklab(43.46% -0.0135 -0.0771)
OKLCH	oklch(43.46% 0.078 260.1)
XYZ	xyz(8.1548, 8.1517, 20.2086)
Luminance	0.0815 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37517C #7C6237

analogous

#37737C #37517C #3F377C

triadic

#37517C #7C3751 #517C37

tetradic

#37517C #7C3773 #7C6237 #377C3F

square

#37517C #7C3773 #7C6237 #377C3F

split-complementary

#37517C #7C3F37 #737C37

monochromatic

#111A27 #243552 #37517C #4A6DA6 #6E8DBF

Accessibility & contrast

On white

7.98

#37517C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#37517C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37517C

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37517C	#FFFFFF	#000000	##FFFFFF
##37517C	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#40547E

Deuteranopia (green-blind)

#384E7B

Tritanopia (blue-blind)

#115A61

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #37517c;
/* rgb */ color: rgb(55, 81, 124);
/* oklch */ color: oklch(43.5% 0.078 260.1);

Tailwind

colors: {
  custom: {
    50: '#7381a2',
    500: '#37517c',
    950: '#000000',
  },
}

SCSS

$custom: #37517c;
$custom-light: #7381a2;
$custom-dark: #000000;

JSON

{
  "hex": "#37517c",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 124
  },
  "hsl": {
    "h": 217.391,
    "s": 38.547,
    "l": 35.098
  },
  "oklch": {
    "l": 0.43462,
    "c": 0.07833,
    "h": 260.1
  },
  "luminance": 0.08152
}

Semantic roles & 50–950 ramp

primary

#37517C

secondary

#A88F67

accent

#A259CE

background

#F7F7FA

surface

#EDEEF3

border

#C8C9CD

text

#080A0F

muted

#7B7C7F

Preview Lab

Preview with #37517C

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

Preview Lab → · Contrast checker → · Palette generator →