#337CB0#337CB0

#337CB0 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.4% C 0.108 H 243.1°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#337CB0
RGB	rgb(51, 124, 176)
HSL	hsl(205, 55%, 45%)
HSV	hsv(205, 71%, 69%)
CMYK	cmyk(71%, 29.5%, 0%, 31%)
CIE-LAB	lab(49.80, -5.23, -34.11)
CIE-LCH	lch(49.80, 34.50, 261.29°)
OKLab	oklab(56.44% -0.0489 -0.0964)
OKLCH	oklch(56.44% 0.108 243.1)
XYZ	xyz(16.4064, 18.2519, 43.7242)
Luminance	0.1825 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CB0 #B06733

analogous

#33B0A6 #337CB0 #333EB0

triadic

#337CB0 #B0337C #7CB033

tetradic

#337CB0 #A633B0 #B06733 #3EB033

square

#337CB0 #A633B0 #B06733 #3EB033

split-complementary

#337CB0 #B0333E #B0A633

monochromatic

#183951 #255B81 #337CB0 #539ACD #82B6DB

Accessibility & contrast

On white

4.52

#337CB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#337CB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CB0

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CB0	#FFFFFF	#000000	##000000
##337CB0	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647DB2

Deuteranopia (green-blind)

#5371AF

Tritanopia (blue-blind)

#00898E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337cb0;
/* rgb */ color: rgb(51, 124, 176);
/* oklch */ color: oklch(56.4% 0.108 243.1);

Tailwind

colors: {
  custom: {
    50: '#7aa1c8',
    500: '#337cb0',
    950: '#000000',
  },
}

SCSS

$custom: #337cb0;
$custom-light: #7aa1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#337cb0",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 176
  },
  "hsl": {
    "h": 204.96,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.56442,
    "c": 0.10808,
    "h": 243.1
  },
  "luminance": 0.18254
}

Semantic roles & 50–950 ramp

primary

#337CB0

secondary

#C4997B

accent

#8749DE

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #337CB0

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

Preview Lab → · Contrast checker → · Palette generator →