#337DAF#337DAF

#337DAF is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.6% C 0.106 H 241.8°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#337DAF
RGB	rgb(51, 125, 175)
HSL	hsl(204, 55%, 44%)
HSV	hsv(204, 71%, 69%)
CMYK	cmyk(70.9%, 28.6%, 0%, 31.4%)
CIE-LAB	lab(50.05, -6.17, -33.13)
CIE-LCH	lch(50.05, 33.70, 259.45°)
OKLab	oklab(56.63% -0.0502 -0.0935)
OKLCH	oklch(56.63% 0.106 241.8)
XYZ	xyz(16.4337, 18.4644, 43.2470)
Luminance	0.1847 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337DAF #AF6533

analogous

#33AFA3 #337DAF #333FAF

triadic

#337DAF #AF337D #7DAF33

tetradic

#337DAF #A333AF #AF6533 #3FAF33

square

#337DAF #A333AF #AF6533 #3FAF33

split-complementary

#337DAF #AF333F #AFA333

monochromatic

#173950 #255B80 #337DAF #529BCD #82B7DB

Accessibility & contrast

On white

4.47

#337DAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#337DAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337DAF

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337DAF	#FFFFFF	#000000	##000000
##337DAF	1.00	4.47	4.69	4.69
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667EB1

Deuteranopia (green-blind)

#5572AE

Tritanopia (blue-blind)

#00898E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337daf;
/* rgb */ color: rgb(51, 125, 175);
/* oklch */ color: oklch(56.6% 0.106 241.8);

Tailwind

colors: {
  custom: {
    50: '#7aa2c7',
    500: '#337daf',
    950: '#000000',
  },
}

SCSS

$custom: #337daf;
$custom-light: #7aa2c7;
$custom-dark: #000000;

JSON

{
  "hex": "#337daf",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 175
  },
  "hsl": {
    "h": 204.194,
    "s": 54.867,
    "l": 44.314
  },
  "oklch": {
    "l": 0.56628,
    "c": 0.10616,
    "h": 241.8
  },
  "luminance": 0.18466
}

Semantic roles & 50–950 ramp

primary

#337DAF

secondary

#C4987A

accent

#864ADE

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #337DAF

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

Preview Lab → · Contrast checker → · Palette generator →