#373FBD#373FBD

#373FBD is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.7% C 0.194 H 272.7°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#373FBD
RGB	rgb(55, 63, 189)
HSL	hsl(236, 55%, 48%)
HSV	hsv(236, 71%, 74%)
CMYK	cmyk(70.9%, 66.7%, 0%, 25.9%)
CIE-LAB	lab(34.07, 38.71, -66.97)
CIE-LCH	lch(34.07, 77.35, 300.03°)
OKLab	oklab(44.74% 0.0093 -0.1935)
OKLCH	oklch(44.74% 0.194 272.7)
XYZ	xyz(12.5353, 8.0401, 49.0255)
Luminance	0.0804 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373FBD #BDB537

analogous

#3782BD #373FBD #7237BD

triadic

#373FBD #BD373F #3FBD37

tetradic

#373FBD #BD3782 #BDB537 #37BD72

square

#373FBD #BD3782 #BDB537 #37BD72

split-complementary

#373FBD #BD7237 #82BD37

monochromatic

#1B1F5E #292F8E #373FBD #6067D1 #9094DF

Accessibility & contrast

On white

8.05

#373FBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#373FBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373FBD

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373FBD	#FFFFFF	#000000	##FFFFFF
##373FBD	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C1

Deuteranopia (green-blind)

#004ABB

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #373fbd;
/* rgb */ color: rgb(55, 63, 189);
/* oklch */ color: oklch(44.7% 0.194 272.7);

Tailwind

colors: {
  custom: {
    50: '#8074d2',
    500: '#373fbd',
    950: '#000000',
  },
}

SCSS

$custom: #373fbd;
$custom-light: #8074d2;
$custom-dark: #000000;

JSON

{
  "hex": "#373fbd",
  "rgb": {
    "r": 55,
    "g": 63,
    "b": 189
  },
  "hsl": {
    "h": 236.418,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44743,
    "c": 0.19376,
    "h": 272.7
  },
  "luminance": 0.08041
}

Semantic roles & 50–950 ramp

primary

#373FBD

secondary

#C9C586

accent

#D54ADE

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #373FBD

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

Preview Lab → · Contrast checker → · Palette generator →