#337CA4#337CA4

#337CA4 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.8% C 0.095 H 236.1°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#337CA4
RGB	rgb(51, 124, 164)
HSL	hsl(201, 53%, 42%)
HSV	hsv(201, 69%, 64%)
CMYK	cmyk(68.9%, 24.4%, 0%, 35.7%)
CIE-LAB	lab(49.25, -9.43, -28.00)
CIE-LCH	lch(49.25, 29.54, 251.38°)
OKLab	oklab(55.83% -0.0529 -0.0787)
OKLCH	oklch(55.83% 0.095 236.1)
XYZ	xyz(15.2711, 17.7978, 37.7453)
Luminance	0.1780 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CA4 #A45B33

analogous

#33A494 #337CA4 #3344A4

triadic

#337CA4 #A4337C #7CA433

tetradic

#337CA4 #9433A4 #A45B33 #44A433

square

#337CA4 #9433A4 #A45B33 #44A433

split-complementary

#337CA4 #A43344 #A49433

monochromatic

#163547 #245975 #337CA4 #4D9CC8 #7BB6D6

Accessibility & contrast

On white

4.61

#337CA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#337CA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337CA4

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CA4	#FFFFFF	#000000	##FFFFFF
##337CA4	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#697BA6

Deuteranopia (green-blind)

#5970A3

Tritanopia (blue-blind)

#00868A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337ca4;
/* rgb */ color: rgb(51, 124, 164);
/* oklch */ color: oklch(55.8% 0.095 236.1);

Tailwind

colors: {
  custom: {
    50: '#78a1bf',
    500: '#337ca4',
    950: '#000000',
  },
}

SCSS

$custom: #337ca4;
$custom-light: #78a1bf;
$custom-dark: #000000;

JSON

{
  "hex": "#337ca4",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 164
  },
  "hsl": {
    "h": 201.239,
    "s": 52.558,
    "l": 42.157
  },
  "oklch": {
    "l": 0.55825,
    "c": 0.09483,
    "h": 236.1
  },
  "luminance": 0.17799
}

Semantic roles & 50–950 ramp

primary

#337CA4

secondary

#BF8E74

accent

#7F4CDC

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #337CA4

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

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