#337EB4#337EB4

#337EB4 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.1% C 0.111 H 243.5°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#337EB4
RGB	rgb(51, 126, 180)
HSL	hsl(205, 56%, 45%)
HSV	hsv(205, 72%, 71%)
CMYK	cmyk(71.7%, 30%, 0%, 29.4%)
CIE-LAB	lab(50.59, -4.99, -35.17)
CIE-LCH	lch(50.59, 35.53, 261.93°)
OKLab	oklab(57.13% -0.0496 -0.0995)
OKLCH	oklch(57.13% 0.111 243.5)
XYZ	xyz(17.0611, 18.9189, 45.9237)
Luminance	0.1892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337EB4 #B46933

analogous

#33B4A9 #337EB4 #333EB4

triadic

#337EB4 #B4337E #7EB433

tetradic

#337EB4 #A933B4 #B46933 #3EB433

square

#337EB4 #A933B4 #B46933 #3EB433

split-complementary

#337EB4 #B4333E #B4A933

monochromatic

#183B55 #255D84 #337EB4 #559CCF #85B8DC

Accessibility & contrast

On white

4.39

#337EB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#337EB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337EB4

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337EB4	#FFFFFF	#000000	##000000
##337EB4	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657FB6

Deuteranopia (green-blind)

#5473B3

Tritanopia (blue-blind)

#008B91

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337eb4;
/* rgb */ color: rgb(51, 126, 180);
/* oklch */ color: oklch(57.1% 0.111 243.5);

Tailwind

colors: {
  custom: {
    50: '#7ba3ca',
    500: '#337eb4',
    950: '#000000',
  },
}

SCSS

$custom: #337eb4;
$custom-light: #7ba3ca;
$custom-dark: #000000;

JSON

{
  "hex": "#337eb4",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 180
  },
  "hsl": {
    "h": 205.116,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.57131,
    "c": 0.11116,
    "h": 243.5
  },
  "luminance": 0.18921
}

Semantic roles & 50–950 ramp

primary

#337EB4

secondary

#C69B7D

accent

#8849DF

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #337EB4

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

Preview Lab → · Contrast checker → · Palette generator →