#397BCC#397BCC

#397BCC is a mid, vivid cyan. Relative luminance 0.194; OKLCH L 58.0% C 0.142 H 255.1°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#397BCC
RGB	rgb(57, 123, 204)
HSL	hsl(213, 59%, 51%)
HSV	hsv(213, 72%, 80%)
CMYK	cmyk(72.1%, 39.7%, 0%, 20%)
CIE-LAB	lab(51.14, 6.31, -48.04)
CIE-LCH	lch(51.14, 48.45, 277.49°)
OKLab	oklab(58.02% -0.0365 -0.137)
OKLCH	oklch(58.02% 0.142 255.1)
XYZ	xyz(19.6654, 19.3933, 59.8219)
Luminance	0.1940 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397BCC #CC8A39

analogous

#39C4CC #397BCC #4039CC

triadic

#397BCC #CC397B #7BCC39

tetradic

#397BCC #CC39C4 #CC8A39 #39CC40

square

#397BCC #CC39C4 #CC8A39 #39CC40

split-complementary

#397BCC #CC4039 #C4CC39

monochromatic

#1C416E #295E9F #397BCC #6A9BD9 #9ABCE5

Accessibility & contrast

On white

4.30

#397BCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#397BCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397BCC

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397BCC	#FFFFFF	#000000	##000000
##397BCC	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5581CF

Deuteranopia (green-blind)

#3E74CA

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #397bcc;
/* rgb */ color: rgb(57, 123, 204);
/* oklch */ color: oklch(58.0% 0.142 255.1);

Tailwind

colors: {
  custom: {
    50: '#81a0dc',
    500: '#397bcc',
    950: '#000000',
  },
}

SCSS

$custom: #397bcc;
$custom-light: #81a0dc;
$custom-dark: #000000;

JSON

{
  "hex": "#397bcc",
  "rgb": {
    "r": 57,
    "g": 123,
    "b": 204
  },
  "hsl": {
    "h": 213.061,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.58023,
    "c": 0.14182,
    "h": 255.1
  },
  "luminance": 0.19395
}

Semantic roles & 50–950 ramp

primary

#397BCC

secondary

#D1B490

accent

#9C46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #397BCC

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

Preview Lab → · Contrast checker → · Palette generator →