#397ACC#397ACC

#397ACC is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.8% C 0.143 H 255.6°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#397ACC
RGB	rgb(57, 122, 204)
HSL	hsl(213, 59%, 51%)
HSV	hsv(213, 72%, 80%)
CMYK	cmyk(72.1%, 40.2%, 0%, 20%)
CIE-LAB	lab(50.86, 6.93, -48.50)
CIE-LCH	lch(50.86, 48.99, 278.13°)
OKLab	oklab(57.8% -0.0355 -0.1384)
OKLCH	oklch(57.8% 0.143 255.6)
XYZ	xyz(19.5420, 19.1464, 59.7808)
Luminance	0.1915 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397ACC #CC8B39

analogous

#39C4CC #397ACC #4139CC

triadic

#397ACC #CC397A #7ACC39

tetradic

#397ACC #CC39C4 #CC8B39 #39CC41

square

#397ACC #CC39C4 #CC8B39 #39CC41

split-complementary

#397ACC #CC4139 #C4CC39

monochromatic

#1C416E #295D9F #397ACC #6A9BD9 #9ABBE5

Accessibility & contrast

On white

4.35

#397ACC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#397ACC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397ACC

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397ACC	#FFFFFF	#000000	##000000
##397ACC	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5380CF

Deuteranopia (green-blind)

#3C73CA

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #397acc;
/* rgb */ color: rgb(57, 122, 204);
/* oklch */ color: oklch(57.8% 0.143 255.6);

Tailwind

colors: {
  custom: {
    50: '#819fdc',
    500: '#397acc',
    950: '#000000',
  },
}

SCSS

$custom: #397acc;
$custom-light: #819fdc;
$custom-dark: #000000;

JSON

{
  "hex": "#397acc",
  "rgb": {
    "r": 57,
    "g": 122,
    "b": 204
  },
  "hsl": {
    "h": 213.469,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.578,
    "c": 0.14289,
    "h": 255.6
  },
  "luminance": 0.19149
}

Semantic roles & 50–950 ramp

primary

#397ACC

secondary

#D1B490

accent

#9D46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #397ACC

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

Preview Lab → · Contrast checker → · Palette generator →