#397FC9#397FC9

#397FC9 is a mid, vivid cyan. Relative luminance 0.203; OKLCH L 58.7% C 0.134 H 252.2°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#397FC9
RGB	rgb(57, 127, 201)
HSL	hsl(211, 57%, 51%)
HSV	hsv(211, 72%, 79%)
CMYK	cmyk(71.6%, 36.8%, 0%, 21.2%)
CIE-LAB	lab(52.13, 2.80, -44.76)
CIE-LCH	lch(52.13, 44.85, 273.58°)
OKLab	oklab(58.74% -0.0409 -0.1274)
OKLCH	oklch(58.74% 0.134 252.2)
XYZ	xyz(19.8154, 20.2635, 58.1139)
Luminance	0.2027 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397FC9 #C98339

analogous

#39C7C9 #397FC9 #3B39C9

triadic

#397FC9 #C9397F #7FC939

tetradic

#397FC9 #C939C7 #C98339 #39C93B

square

#397FC9 #C939C7 #C98339 #39C93B

split-complementary

#397FC9 #C93B39 #C7C939

monochromatic

#1D436B #2A619B #397FC9 #699ED6 #99BDE3

Accessibility & contrast

On white

4.16

#397FC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#397FC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397FC9

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397FC9	#FFFFFF	#000000	##000000
##397FC9	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D84CC

Deuteranopia (green-blind)

#4876C8

Tritanopia (blue-blind)

#00909A

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #397fc9;
/* rgb */ color: rgb(57, 127, 201);
/* oklch */ color: oklch(58.7% 0.134 252.2);

Tailwind

colors: {
  custom: {
    50: '#81a3da',
    500: '#397fc9',
    950: '#000000',
  },
}

SCSS

$custom: #397fc9;
$custom-light: #81a3da;
$custom-dark: #000000;

JSON

{
  "hex": "#397fc9",
  "rgb": {
    "r": 57,
    "g": 127,
    "b": 201
  },
  "hsl": {
    "h": 210.833,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.58742,
    "c": 0.13378,
    "h": 252.2
  },
  "luminance": 0.20266
}

Semantic roles & 50–950 ramp

primary

#397FC9

secondary

#CFB08F

accent

#9647E0

background

#F8FAFD

surface

#F0F3FA

border

#CBCDD3

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #397FC9

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

Preview Lab → · Contrast checker → · Palette generator →