#337EB0#337EB0

#337EB0 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 56.9% C 0.107 H 241.5°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#337EB0
RGB	rgb(51, 126, 176)
HSL	hsl(204, 55%, 45%)
HSV	hsv(204, 71%, 69%)
CMYK	cmyk(71%, 28.4%, 0%, 31%)
CIE-LAB	lab(50.40, -6.40, -33.16)
CIE-LCH	lch(50.40, 33.77, 259.07°)
OKLab	oklab(56.92% -0.0509 -0.0936)
OKLCH	oklch(56.92% 0.107 241.5)
XYZ	xyz(16.6595, 18.7583, 43.8086)
Luminance	0.1876 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337EB0 #B06533

analogous

#33B0A4 #337EB0 #3340B0

triadic

#337EB0 #B0337E #7EB033

tetradic

#337EB0 #A433B0 #B06533 #40B033

square

#337EB0 #A433B0 #B06533 #40B033

split-complementary

#337EB0 #B03340 #B0A433

monochromatic

#183A51 #255C81 #337EB0 #539CCD #82B8DB

Accessibility & contrast

On white

4.42

#337EB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#337EB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337EB0

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337EB0	#FFFFFF	#000000	##000000
##337EB0	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#677FB2

Deuteranopia (green-blind)

#5673AF

Tritanopia (blue-blind)

#008A8F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337eb0;
/* rgb */ color: rgb(51, 126, 176);
/* oklch */ color: oklch(56.9% 0.107 241.5);

Tailwind

colors: {
  custom: {
    50: '#7aa3c8',
    500: '#337eb0',
    950: '#000000',
  },
}

SCSS

$custom: #337eb0;
$custom-light: #7aa3c8;
$custom-dark: #000000;

JSON

{
  "hex": "#337eb0",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 176
  },
  "hsl": {
    "h": 204,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.56919,
    "c": 0.10656,
    "h": 241.5
  },
  "luminance": 0.1876
}

Semantic roles & 50–950 ramp

primary

#337EB0

secondary

#C4987B

accent

#8549DE

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #337EB0

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

Preview Lab → · Contrast checker → · Palette generator →