#337DAB#337DAB

#337DAB is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.4% C 0.102 H 239.5°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#337DAB
RGB	rgb(51, 125, 171)
HSL	hsl(203, 54%, 44%)
HSV	hsv(203, 70%, 67%)
CMYK	cmyk(70.2%, 26.9%, 0%, 32.9%)
CIE-LAB	lab(49.87, -7.57, -31.10)
CIE-LCH	lch(49.87, 32.01, 256.31°)
OKLab	oklab(56.42% -0.0515 -0.0877)
OKLCH	oklch(56.42% 0.102 239.5)
XYZ	xyz(16.0467, 18.3096, 41.2086)
Luminance	0.1831 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337DAB #AB6133

analogous

#33AB9D #337DAB #3341AB

triadic

#337DAB #AB337D #7DAB33

tetradic

#337DAB #9D33AB #AB6133 #41AB33

square

#337DAB #9D33AB #AB6133 #41AB33

split-complementary

#337DAB #AB3341 #AB9D33

monochromatic

#17384D #255B7C #337DAB #509CCB #7FB7D9

Accessibility & contrast

On white

4.50

#337DAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#337DAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337DAB

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337DAB	#FFFFFF	#000000	##000000
##337DAB	1.00	4.50	4.66	4.66
#FFFFFF	4.50	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)

#687DAD

Deuteranopia (green-blind)

#5771AA

Tritanopia (blue-blind)

#00898D

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337dab;
/* rgb */ color: rgb(51, 125, 171);
/* oklch */ color: oklch(56.4% 0.102 239.5);

Tailwind

colors: {
  custom: {
    50: '#79a2c4',
    500: '#337dab',
    950: '#000000',
  },
}

SCSS

$custom: #337dab;
$custom-light: #79a2c4;
$custom-dark: #000000;

JSON

{
  "hex": "#337dab",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 171
  },
  "hsl": {
    "h": 203,
    "s": 54.054,
    "l": 43.529
  },
  "oklch": {
    "l": 0.5642,
    "c": 0.10169,
    "h": 239.5
  },
  "luminance": 0.18311
}

Semantic roles & 50–950 ramp

primary

#337DAB

secondary

#C29478

accent

#834ADD

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #337DAB

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

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