#37397F#37397F

#37397F is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.3% C 0.116 H 278.2°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#37397F
RGB	rgb(55, 57, 127)
HSL	hsl(238, 40%, 36%)
HSV	hsv(238, 57%, 50%)
CMYK	cmyk(56.7%, 55.1%, 0%, 50.2%)
CIE-LAB	lab(27.49, 20.80, -40.07)
CIE-LCH	lch(27.49, 45.15, 297.43°)
OKLab	oklab(38.32% 0.0165 -0.1146)
OKLCH	oklch(38.32% 0.116 278.2)
XYZ	xyz(6.8682, 5.2703, 20.7299)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37397F #7F7D37

analogous

#375D7F #37397F #59377F

triadic

#37397F #7F3739 #397F37

tetradic

#37397F #7F375D #7F7D37 #377F59

square

#37397F #7F375D #7F7D37 #377F59

split-complementary

#37397F #7F5937 #5D7F37

monochromatic

#12132A #252654 #37397F #494CAA #7072C1

Accessibility & contrast

On white

10.22

#37397F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#37397F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37397F

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37397F	#FFFFFF	#000000	##FFFFFF
##37397F	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114481

Deuteranopia (green-blind)

#033E7E

Tritanopia (blue-blind)

#144956

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #37397f;
/* rgb */ color: rgb(55, 57, 127);
/* oklch */ color: oklch(38.3% 0.116 278.2);

Tailwind

colors: {
  custom: {
    50: '#746fa5',
    500: '#37397f',
    950: '#000000',
  },
}

SCSS

$custom: #37397f;
$custom-light: #746fa5;
$custom-dark: #000000;

JSON

{
  "hex": "#37397f",
  "rgb": {
    "r": 55,
    "g": 57,
    "b": 127
  },
  "hsl": {
    "h": 238.333,
    "s": 39.56,
    "l": 35.686
  },
  "oklch": {
    "l": 0.38315,
    "c": 0.11578,
    "h": 278.2
  },
  "luminance": 0.05271
}

Semantic roles & 50–950 ramp

primary

#37397F

secondary

#AAA868

accent

#CC58CF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#09070F

muted

#7B7A7F

Preview Lab

Preview with #37397F

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

Preview Lab → · Contrast checker → · Palette generator →