#37517D#37517D

#37517D is a dark, moderate blue. Relative luminance 0.082; OKLCH L 43.5% C 0.080 H 260.5°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#37517D
RGB	rgb(55, 81, 125)
HSL	hsl(218, 39%, 35%)
HSV	hsv(218, 56%, 49%)
CMYK	cmyk(56%, 35.2%, 0%, 51%)
CIE-LAB	lab(34.35, 4.08, -27.90)
CIE-LCH	lch(34.35, 28.20, 278.31°)
OKLab	oklab(43.52% -0.0132 -0.0787)
OKLCH	oklch(43.52% 0.08 260.5)
XYZ	xyz(8.2184, 8.1771, 20.5433)
Luminance	0.0818 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37517D #7D6337

analogous

#37747D #37517D #40377D

triadic

#37517D #7D3751 #517D37

tetradic

#37517D #7D3774 #7D6337 #377D40

square

#37517D #7D3774 #7D6337 #377D40

split-complementary

#37517D #7D4037 #747D37

monochromatic

#121A28 #243552 #37517D #4A6DA7 #6F8DC0

Accessibility & contrast

On white

7.97

#37517D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#37517D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37517D

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37517D	#FFFFFF	#000000	##FFFFFF
##37517D	1.00	7.97	2.64	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F547F

Deuteranopia (green-blind)

#374E7C

Tritanopia (blue-blind)

#105B61

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #37517d;
/* rgb */ color: rgb(55, 81, 125);
/* oklch */ color: oklch(43.5% 0.080 260.5);

Tailwind

colors: {
  custom: {
    50: '#7381a3',
    500: '#37517d',
    950: '#000000',
  },
}

SCSS

$custom: #37517d;
$custom-light: #7381a3;
$custom-dark: #000000;

JSON

{
  "hex": "#37517d",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 125
  },
  "hsl": {
    "h": 217.714,
    "s": 38.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.4352,
    "c": 0.07981,
    "h": 260.5
  },
  "luminance": 0.08178
}

Semantic roles & 50–950 ramp

primary

#37517D

secondary

#A89067

accent

#A359CF

background

#F7F7FA

surface

#EDEEF3

border

#C8C9CD

text

#080A0F

muted

#7B7C7F

Preview Lab

Preview with #37517D

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

Preview Lab → · Contrast checker → · Palette generator →