#397BBC#397BBC

#397BBC is a mid, vivid cyan. Relative luminance 0.187; OKLCH L 57.1% C 0.121 H 250.5°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#397BBC
RGB	rgb(57, 123, 188)
HSL	hsl(210, 53%, 48%)
HSV	hsv(210, 70%, 74%)
CMYK	cmyk(69.7%, 34.6%, 0%, 26.3%)
CIE-LAB	lab(50.29, 0.56, -40.24)
CIE-LCH	lch(50.29, 40.24, 270.79°)
OKLab	oklab(57.08% -0.0405 -0.1142)
OKLCH	oklch(57.08% 0.121 250.5)
XYZ	xyz(17.8440, 18.6647, 50.2294)
Luminance	0.1867 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397BBC #BC7A39

analogous

#39BCBB #397BBC #393ABC

triadic

#397BBC #BC397B #7BBC39

tetradic

#397BBC #BB39BC #BC7A39 #3ABC39

square

#397BBC #BB39BC #BC7A39 #3ABC39

split-complementary

#397BBC #BC393A #BCBB39

monochromatic

#1D3E5E #2B5C8D #397BBC #639AD0 #92B8DE

Accessibility & contrast

On white

4.44

#397BBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#397BBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397BBC

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397BBC	#FFFFFF	#000000	##000000
##397BBC	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7EBF

Deuteranopia (green-blind)

#4B72BB

Tritanopia (blue-blind)

#008A93

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #397bbc;
/* rgb */ color: rgb(57, 123, 188);
/* oklch */ color: oklch(57.1% 0.121 250.5);

Tailwind

colors: {
  custom: {
    50: '#7ea0d0',
    500: '#397bbc',
    950: '#000000',
  },
}

SCSS

$custom: #397bbc;
$custom-light: #7ea0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#397bbc",
  "rgb": {
    "r": 57,
    "g": 123,
    "b": 188
  },
  "hsl": {
    "h": 209.771,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.5708,
    "c": 0.12116,
    "h": 250.5
  },
  "luminance": 0.18667
}

Semantic roles & 50–950 ramp

primary

#397BBC

secondary

#C9A888

accent

#934BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #397BBC

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

Preview Lab → · Contrast checker → · Palette generator →