#337CB2#337CB2

#337CB2 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.5% C 0.110 H 244.1°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#337CB2
RGB	rgb(51, 124, 178)
HSL	hsl(206, 55%, 45%)
HSV	hsv(206, 71%, 70%)
CMYK	cmyk(71.3%, 30.3%, 0%, 30.2%)
CIE-LAB	lab(49.90, -4.52, -35.11)
CIE-LCH	lch(49.90, 35.40, 262.67°)
OKLab	oklab(56.55% -0.0482 -0.0993)
OKLCH	oklch(56.55% 0.11 244.1)
XYZ	xyz(16.6057, 18.3316, 44.7740)
Luminance	0.1833 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CB2 #B26933

analogous

#33B2A9 #337CB2 #333CB2

triadic

#337CB2 #B2337C #7CB233

tetradic

#337CB2 #A933B2 #B26933 #3CB233

square

#337CB2 #A933B2 #B26933 #3CB233

split-complementary

#337CB2 #B2333C #B2A933

monochromatic

#183A53 #255B82 #337CB2 #549ACE #84B6DC

Accessibility & contrast

On white

4.50

#337CB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#337CB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CB2

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CB2	#FFFFFF	#000000	##000000
##337CB2	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB4

Deuteranopia (green-blind)

#5271B1

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337cb2;
/* rgb */ color: rgb(51, 124, 178);
/* oklch */ color: oklch(56.5% 0.110 244.1);

Tailwind

colors: {
  custom: {
    50: '#7aa1c9',
    500: '#337cb2',
    950: '#000000',
  },
}

SCSS

$custom: #337cb2;
$custom-light: #7aa1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#337cb2",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 178
  },
  "hsl": {
    "h": 205.512,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.56549,
    "c": 0.11041,
    "h": 244.1
  },
  "luminance": 0.18333
}

Semantic roles & 50–950 ramp

primary

#337CB2

secondary

#C59B7C

accent

#8949DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #337CB2

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

Preview Lab → · Contrast checker → · Palette generator →