#337EA4#337EA4

#337EA4 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.3% C 0.094 H 234.1°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#337EA4
RGB	rgb(51, 126, 164)
HSL	hsl(200, 53%, 42%)
HSV	hsv(200, 69%, 64%)
CMYK	cmyk(68.9%, 23.2%, 0%, 35.7%)
CIE-LAB	lab(49.86, -10.58, -27.04)
CIE-LCH	lch(49.86, 29.04, 248.64°)
OKLab	oklab(56.31% -0.055 -0.0759)
OKLCH	oklch(56.31% 0.094 234.1)
XYZ	xyz(15.5243, 18.3042, 37.8297)
Luminance	0.1831 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337EA4 #A45933

analogous

#33A492 #337EA4 #3346A4

triadic

#337EA4 #A4337E #7EA433

tetradic

#337EA4 #9233A4 #A45933 #46A433

square

#337EA4 #9233A4 #A45933 #46A433

split-complementary

#337EA4 #A43346 #A49233

monochromatic

#163647 #245A75 #337EA4 #4D9EC8 #7BB8D6

Accessibility & contrast

On white

4.51

#337EA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#337EA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337EA4

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337EA4	#FFFFFF	#000000	##000000
##337EA4	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7DA6

Deuteranopia (green-blind)

#5C72A3

Tritanopia (blue-blind)

#00888B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337ea4;
/* rgb */ color: rgb(51, 126, 164);
/* oklch */ color: oklch(56.3% 0.094 234.1);

Tailwind

colors: {
  custom: {
    50: '#78a3bf',
    500: '#337ea4',
    950: '#000000',
  },
}

SCSS

$custom: #337ea4;
$custom-light: #78a3bf;
$custom-dark: #000000;

JSON

{
  "hex": "#337ea4",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 164
  },
  "hsl": {
    "h": 200.177,
    "s": 52.558,
    "l": 42.157
  },
  "oklch": {
    "l": 0.56312,
    "c": 0.09378,
    "h": 234.1
  },
  "luminance": 0.18306
}

Semantic roles & 50–950 ramp

primary

#337EA4

secondary

#BF8D74

accent

#7C4CDC

background

#F7FAFB

surface

#EEF3F7

border

#C9CDD0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #337EA4

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

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