#37537B#37537B

#37537B is a dark, moderate blue. Relative luminance 0.084; OKLCH L 43.9% C 0.075 H 257.3°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#37537B
RGB	rgb(55, 83, 123)
HSL	hsl(215, 38%, 35%)
HSV	hsv(215, 55%, 48%)
CMYK	cmyk(55.3%, 32.5%, 0%, 51.8%)
CIE-LAB	lab(34.86, 2.10, -25.86)
CIE-LCH	lch(34.86, 25.95, 274.63°)
OKLab	oklab(43.88% -0.0163 -0.0728)
OKLCH	oklch(43.88% 0.075 257.3)
XYZ	xyz(8.2427, 8.4282, 19.9275)
Luminance	0.0843 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37537B #7B5F37

analogous

#37757B #37537B #3D377B

triadic

#37537B #7B3753 #537B37

tetradic

#37537B #7B3775 #7B5F37 #377B3D

square

#37537B #7B3775 #7B5F37 #377B3D

split-complementary

#37537B #7B3D37 #757B37

monochromatic

#111A26 #243651 #37537B #4A70A5 #6E8FBE

Accessibility & contrast

On white

7.82

#37537B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#37537B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37537B

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37537B	#FFFFFF	#000000	##FFFFFF
##37537B	1.00	7.82	2.69	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#43567D

Deuteranopia (green-blind)

#3B4F7A

Tritanopia (blue-blind)

#125C61

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #37537b;
/* rgb */ color: rgb(55, 83, 123);
/* oklch */ color: oklch(43.9% 0.075 257.3);

Tailwind

colors: {
  custom: {
    50: '#7383a1',
    500: '#37537b',
    950: '#000000',
  },
}

SCSS

$custom: #37537b;
$custom-light: #7383a1;
$custom-dark: #000000;

JSON

{
  "hex": "#37537b",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 123
  },
  "hsl": {
    "h": 215.294,
    "s": 38.202,
    "l": 34.902
  },
  "oklch": {
    "l": 0.43884,
    "c": 0.07458,
    "h": 257.3
  },
  "luminance": 0.08429
}

Semantic roles & 50–950 ramp

primary

#37537B

secondary

#A78D67

accent

#9E5ACE

background

#F7F7F9

surface

#EDEEF2

border

#C8C9CC

text

#080A0F

muted

#7B7C7E

Preview Lab

Preview with #37537B

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

Preview Lab → · Contrast checker → · Palette generator →