#337EB2#337EB2

#337EB2 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.0% C 0.109 H 242.5°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#337EB2
RGB	rgb(51, 126, 178)
HSL	hsl(205, 55%, 45%)
HSV	hsv(205, 71%, 70%)
CMYK	cmyk(71.3%, 29.2%, 0%, 30.2%)
CIE-LAB	lab(50.50, -5.69, -34.17)
CIE-LCH	lch(50.50, 34.64, 260.54°)
OKLab	oklab(57.02% -0.0503 -0.0965)
OKLCH	oklch(57.02% 0.109 242.5)
XYZ	xyz(16.8589, 18.8380, 44.8584)
Luminance	0.1884 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337EB2 #B26733

analogous

#33B2A7 #337EB2 #333EB2

triadic

#337EB2 #B2337E #7EB233

tetradic

#337EB2 #A733B2 #B26733 #3EB233

square

#337EB2 #A733B2 #B26733 #3EB233

split-complementary

#337EB2 #B2333E #B2A733

monochromatic

#183B53 #255C82 #337EB2 #549CCE #84B8DC

Accessibility & contrast

On white

4.40

#337EB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#337EB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337EB2

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337EB2	#FFFFFF	#000000	##000000
##337EB2	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667FB4

Deuteranopia (green-blind)

#5573B1

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337eb2;
/* rgb */ color: rgb(51, 126, 178);
/* oklch */ color: oklch(57.0% 0.109 242.5);

Tailwind

colors: {
  custom: {
    50: '#7aa3c9',
    500: '#337eb2',
    950: '#000000',
  },
}

SCSS

$custom: #337eb2;
$custom-light: #7aa3c9;
$custom-dark: #000000;

JSON

{
  "hex": "#337eb2",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 178
  },
  "hsl": {
    "h": 204.567,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.57024,
    "c": 0.10884,
    "h": 242.5
  },
  "luminance": 0.1884
}

Semantic roles & 50–950 ramp

primary

#337EB2

secondary

#C59A7C

accent

#8649DF

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #337EB2

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

Preview Lab → · Contrast checker → · Palette generator →