#397CBB#397CBB

#397CBB is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.3% C 0.119 H 249.5°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#397CBB
RGB	rgb(57, 124, 187)
HSL	hsl(209, 53%, 48%)
HSV	hsv(209, 70%, 73%)
CMYK	cmyk(69.5%, 33.7%, 0%, 26.7%)
CIE-LAB	lab(50.54, -0.40, -39.28)
CIE-LCH	lch(50.54, 39.28, 269.42°)
OKLab	oklab(57.25% -0.0417 -0.1114)
OKLCH	oklch(57.25% 0.119 249.5)
XYZ	xyz(17.8613, 18.8711, 49.7052)
Luminance	0.1887 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397CBB #BB7839

analogous

#39BBB9 #397CBB #393BBB

triadic

#397CBB #BB397C #7CBB39

tetradic

#397CBB #B939BB #BB7839 #3BBB39

square

#397CBB #B939BB #BB7839 #3BBB39

split-complementary

#397CBB #BB393B #BBB939

monochromatic

#1C3E5D #2B5D8C #397CBB #629ACF #91B8DD

Accessibility & contrast

On white

4.40

#397CBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#397CBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397CBB

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397CBB	#FFFFFF	#000000	##000000
##397CBB	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#607FBE

Deuteranopia (green-blind)

#4E73BA

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #397cbb;
/* rgb */ color: rgb(57, 124, 187);
/* oklch */ color: oklch(57.3% 0.119 249.5);

Tailwind

colors: {
  custom: {
    50: '#7ea1d0',
    500: '#397cbb',
    950: '#000000',
  },
}

SCSS

$custom: #397cbb;
$custom-light: #7ea1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#397cbb",
  "rgb": {
    "r": 57,
    "g": 124,
    "b": 187
  },
  "hsl": {
    "h": 209.077,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57254,
    "c": 0.11896,
    "h": 249.5
  },
  "luminance": 0.18873
}

Semantic roles & 50–950 ramp

primary

#397CBB

secondary

#C8A787

accent

#924BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #397CBB

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

Preview Lab → · Contrast checker → · Palette generator →