#337DAD#337DAD

#337DAD is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.5% C 0.104 H 240.7°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#337DAD
RGB	rgb(51, 125, 173)
HSL	hsl(204, 54%, 44%)
HSV	hsv(204, 71%, 68%)
CMYK	cmyk(70.5%, 27.7%, 0%, 32.2%)
CIE-LAB	lab(49.96, -6.87, -32.12)
CIE-LCH	lch(49.96, 32.84, 257.92°)
OKLab	oklab(56.52% -0.0509 -0.0906)
OKLCH	oklch(56.52% 0.104 240.7)
XYZ	xyz(16.2388, 18.3864, 42.2202)
Luminance	0.1839 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337DAD #AD6333

analogous

#33ADA0 #337DAD #3340AD

triadic

#337DAD #AD337D #7DAD33

tetradic

#337DAD #A033AD #AD6333 #40AD33

square

#337DAD #A033AD #AD6333 #40AD33

split-complementary

#337DAD #AD3340 #ADA033

monochromatic

#17394E #255B7E #337DAD #519CCC #81B7DA

Accessibility & contrast

On white

4.49

#337DAD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#337DAD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337DAD

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337DAD	#FFFFFF	#000000	##000000
##337DAD	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#677DAF

Deuteranopia (green-blind)

#5672AC

Tritanopia (blue-blind)

#00898E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337dad;
/* rgb */ color: rgb(51, 125, 173);
/* oklch */ color: oklch(56.5% 0.104 240.7);

Tailwind

colors: {
  custom: {
    50: '#7aa2c5',
    500: '#337dad',
    950: '#000000',
  },
}

SCSS

$custom: #337dad;
$custom-light: #7aa2c5;
$custom-dark: #000000;

JSON

{
  "hex": "#337dad",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 173
  },
  "hsl": {
    "h": 203.607,
    "s": 54.464,
    "l": 43.922
  },
  "oklch": {
    "l": 0.56524,
    "c": 0.1039,
    "h": 240.7
  },
  "luminance": 0.18388
}

Semantic roles & 50–950 ramp

primary

#337DAD

secondary

#C39679

accent

#844ADE

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #337DAD

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

Preview Lab → · Contrast checker → · Palette generator →