#397CCC#397CCC

#397CCC is a mid, vivid cyan. Relative luminance 0.196; OKLCH L 58.2% C 0.141 H 254.6°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#397CCC
RGB	rgb(57, 124, 204)
HSL	hsl(213, 59%, 51%)
HSV	hsv(213, 72%, 80%)
CMYK	cmyk(72.1%, 39.2%, 0%, 20%)
CIE-LAB	lab(51.43, 5.70, -47.58)
CIE-LCH	lch(51.43, 47.92, 276.83°)
OKLab	oklab(58.25% -0.0374 -0.1357)
OKLCH	oklch(58.25% 0.141 254.6)
XYZ	xyz(19.7901, 19.6426, 59.8635)
Luminance	0.1965 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397CCC #CC8939

analogous

#39C5CC #397CCC #3F39CC

triadic

#397CCC #CC397C #7CCC39

tetradic

#397CCC #CC39C5 #CC8939 #39CC3F

square

#397CCC #CC39C5 #CC8939 #39CC3F

split-complementary

#397CCC #CC3F39 #C5CC39

monochromatic

#1C426E #295F9F #397CCC #6A9CD9 #9ABCE5

Accessibility & contrast

On white

4.26

#397CCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#397CCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397CCC

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397CCC	#FFFFFF	#000000	##000000
##397CCC	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5782CF

Deuteranopia (green-blind)

#4074CA

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #397ccc;
/* rgb */ color: rgb(57, 124, 204);
/* oklch */ color: oklch(58.2% 0.141 254.6);

Tailwind

colors: {
  custom: {
    50: '#81a1dc',
    500: '#397ccc',
    950: '#000000',
  },
}

SCSS

$custom: #397ccc;
$custom-light: #81a1dc;
$custom-dark: #000000;

JSON

{
  "hex": "#397ccc",
  "rgb": {
    "r": 57,
    "g": 124,
    "b": 204
  },
  "hsl": {
    "h": 212.653,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.58246,
    "c": 0.14075,
    "h": 254.6
  },
  "luminance": 0.19645
}

Semantic roles & 50–950 ramp

primary

#397CCC

secondary

#D1B390

accent

#9B46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #397CCC

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

Preview Lab → · Contrast checker → · Palette generator →