#397FCC#397FCC

#397FCC is a mid, vivid cyan. Relative luminance 0.204; OKLCH L 58.9% C 0.138 H 253.0°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#397FCC
RGB	rgb(57, 127, 204)
HSL	hsl(211, 59%, 51%)
HSV	hsv(211, 72%, 80%)
CMYK	cmyk(72.1%, 37.7%, 0%, 20%)
CIE-LAB	lab(52.29, 3.88, -46.21)
CIE-LCH	lch(52.29, 46.38, 274.80°)
OKLab	oklab(58.92% -0.0402 -0.1316)
OKLCH	oklch(58.92% 0.138 253)
XYZ	xyz(20.1717, 20.4060, 59.9907)
Luminance	0.2041 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397FCC #CC8639

analogous

#39C8CC #397FCC #3C39CC

triadic

#397FCC #CC397F #7FCC39

tetradic

#397FCC #CC39C8 #CC8639 #39CC3C

square

#397FCC #CC39C8 #CC8639 #39CC3C

split-complementary

#397FCC #CC3C39 #C8CC39

monochromatic

#1C436E #29619F #397FCC #6A9ED9 #9ABEE5

Accessibility & contrast

On white

4.13

#397FCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#397FCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397FCC

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397FCC	#FFFFFF	#000000	##000000
##397FCC	1.00	4.13	5.08	5.08
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C84CF

Deuteranopia (green-blind)

#4576CA

Tritanopia (blue-blind)

#00919C

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #397fcc;
/* rgb */ color: rgb(57, 127, 204);
/* oklch */ color: oklch(58.9% 0.138 253.0);

Tailwind

colors: {
  custom: {
    50: '#81a3dc',
    500: '#397fcc',
    950: '#000000',
  },
}

SCSS

$custom: #397fcc;
$custom-light: #81a3dc;
$custom-dark: #000000;

JSON

{
  "hex": "#397fcc",
  "rgb": {
    "r": 57,
    "g": 127,
    "b": 204
  },
  "hsl": {
    "h": 211.429,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.58919,
    "c": 0.13762,
    "h": 253
  },
  "luminance": 0.20408
}

Semantic roles & 50–950 ramp

primary

#397FCC

secondary

#D1B290

accent

#9846E2

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #397FCC

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

Preview Lab → · Contrast checker → · Palette generator →