#337CA6#337CA6

#337CA6 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.9% C 0.097 H 237.4°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#337CA6
RGB	rgb(51, 124, 166)
HSL	hsl(202, 53%, 43%)
HSV	hsv(202, 69%, 65%)
CMYK	cmyk(69.3%, 25.3%, 0%, 34.9%)
CIE-LAB	lab(49.34, -8.74, -29.02)
CIE-LCH	lch(49.34, 30.31, 253.25°)
OKLab	oklab(55.93% -0.0522 -0.0817)
OKLCH	oklch(55.93% 0.097 237.4)
XYZ	xyz(15.4531, 17.8706, 38.7040)
Luminance	0.1787 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CA6 #A65D33

analogous

#33A696 #337CA6 #3343A6

triadic

#337CA6 #A6337C #7CA633

tetradic

#337CA6 #9633A6 #A65D33 #43A633

square

#337CA6 #9633A6 #A65D33 #43A633

split-complementary

#337CA6 #A63343 #A69633

monochromatic

#163648 #255977 #337CA6 #4E9CC9 #7CB6D7

Accessibility & contrast

On white

4.59

#337CA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#337CA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337CA6

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CA6	#FFFFFF	#000000	##FFFFFF
##337CA6	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687CA8

Deuteranopia (green-blind)

#5870A5

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337ca6;
/* rgb */ color: rgb(51, 124, 166);
/* oklch */ color: oklch(55.9% 0.097 237.4);

Tailwind

colors: {
  custom: {
    50: '#78a1c0',
    500: '#337ca6',
    950: '#000000',
  },
}

SCSS

$custom: #337ca6;
$custom-light: #78a1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#337ca6",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 166
  },
  "hsl": {
    "h": 201.913,
    "s": 52.995,
    "l": 42.549
  },
  "oklch": {
    "l": 0.55925,
    "c": 0.09692,
    "h": 237.4
  },
  "luminance": 0.17872
}

Semantic roles & 50–950 ramp

primary

#337CA6

secondary

#C09075

accent

#804BDC

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #337CA6

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

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