#37339B#37339B

#37339B is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.6% C 0.163 H 277.6°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#37339B
RGB	rgb(55, 51, 155)
HSL	hsl(242, 50%, 40%)
HSV	hsv(242, 67%, 61%)
CMYK	cmyk(64.5%, 67.1%, 0%, 39.2%)
CIE-LAB	lab(28.24, 34.44, -56.17)
CIE-LCH	lch(28.24, 65.89, 301.51°)
OKLab	oklab(39.57% 0.0215 -0.1619)
OKLCH	oklch(39.57% 0.163 277.6)
XYZ	xyz(8.6739, 5.5457, 31.6173)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37339B #979B33

analogous

#33639B #37339B #6B339B

triadic

#37339B #9B3733 #339B37

tetradic

#37339B #9B3363 #979B33 #339B6B

square

#37339B #9B3363 #979B33 #339B6B

split-complementary

#37339B #9B6B33 #639B33

monochromatic

#16153F #27246D #37339B #4D48C3 #7A76D2

Accessibility & contrast

On white

9.96

#37339B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#37339B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37339B

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37339B	#FFFFFF	#000000	##FFFFFF
##37339B	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479E

Deuteranopia (green-blind)

#003E99

Tritanopia (blue-blind)

#004E62

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #37339b;
/* rgb */ color: rgb(55, 51, 155);
/* oklch */ color: oklch(39.6% 0.163 277.6);

Tailwind

colors: {
  custom: {
    50: '#7a6bb9',
    500: '#37339b',
    950: '#000000',
  },
}

SCSS

$custom: #37339b;
$custom-light: #7a6bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#37339b",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 155
  },
  "hsl": {
    "h": 242.308,
    "s": 50.485,
    "l": 40.392
  },
  "oklch": {
    "l": 0.39571,
    "c": 0.16338,
    "h": 277.6
  },
  "luminance": 0.05546
}

Semantic roles & 50–950 ramp

primary

#37339B

secondary

#B8BA6F

accent

#DA4ED5

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #37339B

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

Preview Lab → · Contrast checker → · Palette generator →