#397AAB#397AAB

#397AAB is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.9% C 0.101 H 243.9°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#397AAB
RGB	rgb(57, 122, 171)
HSL	hsl(206, 50%, 45%)
HSV	hsv(206, 67%, 67%)
CMYK	cmyk(66.7%, 28.7%, 0%, 32.9%)
CIE-LAB	lab(49.16, -4.83, -32.19)
CIE-LCH	lch(49.16, 32.55, 261.46°)
OKLab	oklab(55.92% -0.0445 -0.0908)
OKLCH	oklch(55.92% 0.101 243.9)
XYZ	xyz(15.9948, 17.7275, 41.0990)
Luminance	0.1773 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397AAB #AB6A39

analogous

#39ABA3 #397AAB #3941AB

triadic

#397AAB #AB397A #7AAB39

tetradic

#397AAB #A339AB #AB6A39 #41AB39

square

#397AAB #A339AB #AB6A39 #41AB39

split-complementary

#397AAB #AB3941 #ABA339

monochromatic

#1A394F #2A597D #397AAB #5998C8 #87B5D7

Accessibility & contrast

On white

4.62

#397AAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#397AAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #397AAB

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397AAB	#FFFFFF	#000000	##FFFFFF
##397AAB	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#647BAD

Deuteranopia (green-blind)

#5470AA

Tritanopia (blue-blind)

#00868B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #397aab;
/* rgb */ color: rgb(57, 122, 171);
/* oklch */ color: oklch(55.9% 0.101 243.9);

Tailwind

colors: {
  custom: {
    50: '#7ca0c4',
    500: '#397aab',
    950: '#000000',
  },
}

SCSS

$custom: #397aab;
$custom-light: #7ca0c4;
$custom-dark: #000000;

JSON

{
  "hex": "#397aab",
  "rgb": {
    "r": 57,
    "g": 122,
    "b": 171
  },
  "hsl": {
    "h": 205.789,
    "s": 50,
    "l": 44.706
  },
  "oklch": {
    "l": 0.55919,
    "c": 0.10111,
    "h": 243.9
  },
  "luminance": 0.17729
}

Semantic roles & 50–950 ramp

primary

#397AAB

secondary

#C19B7F

accent

#8A4EDA

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #397AAB

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

Preview Lab → · Contrast checker → · Palette generator →