#37339D#37339D

#37339D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.8% C 0.166 H 277.4°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#37339D
RGB	rgb(55, 51, 157)
HSL	hsl(242, 51%, 41%)
HSV	hsv(242, 68%, 62%)
CMYK	cmyk(65%, 67.5%, 0%, 38.4%)
CIE-LAB	lab(28.42, 35.12, -57.09)
CIE-LCH	lch(28.42, 67.03, 301.60°)
OKLab	oklab(39.76% 0.0213 -0.1647)
OKLCH	oklch(39.76% 0.166 277.4)
XYZ	xyz(8.8432, 5.6135, 32.5092)
Luminance	0.0561 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37339D #999D33

analogous

#33649D #37339D #6C339D

triadic

#37339D #9D3733 #339D37

tetradic

#37339D #9D3364 #999D33 #339D6C

square

#37339D #9D3364 #999D33 #339D6C

split-complementary

#37339D #9D6C33 #649D33

monochromatic

#171541 #27246F #37339D #4E49C4 #7B77D3

Accessibility & contrast

On white

9.89

#37339D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#37339D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37339D

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37339D	#FFFFFF	#000000	##FFFFFF
##37339D	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A0

Deuteranopia (green-blind)

#003F9B

Tritanopia (blue-blind)

#004F63

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #37339d;
/* rgb */ color: rgb(55, 51, 157);
/* oklch */ color: oklch(39.8% 0.166 277.4);

Tailwind

colors: {
  custom: {
    50: '#7b6bbb',
    500: '#37339d',
    950: '#000000',
  },
}

SCSS

$custom: #37339d;
$custom-light: #7b6bbb;
$custom-dark: #000000;

JSON

{
  "hex": "#37339d",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 157
  },
  "hsl": {
    "h": 242.264,
    "s": 50.962,
    "l": 40.784
  },
  "oklch": {
    "l": 0.39757,
    "c": 0.16603,
    "h": 277.4
  },
  "luminance": 0.05614
}

Semantic roles & 50–950 ramp

primary

#37339D

secondary

#B9BB70

accent

#DA4DD5

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #37339D

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

Preview Lab → · Contrast checker → · Palette generator →