#397DB0#397DB0

#397DB0 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.9% C 0.105 H 243.9°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#397DB0
RGB	rgb(57, 125, 176)
HSL	hsl(206, 51%, 46%)
HSV	hsv(206, 68%, 69%)
CMYK	cmyk(67.6%, 29%, 0%, 31%)
CIE-LAB	lab(50.30, -4.86, -33.31)
CIE-LCH	lch(50.30, 33.66, 261.69°)
OKLab	oklab(56.89% -0.0461 -0.094)
OKLCH	oklch(56.89% 0.105 243.9)
XYZ	xyz(16.8545, 18.6699, 43.7813)
Luminance	0.1867 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397DB0 #B06C39

analogous

#39B0A7 #397DB0 #3942B0

triadic

#397DB0 #B0397D #7DB039

tetradic

#397DB0 #A739B0 #B06C39 #42B039

square

#397DB0 #A739B0 #B06C39 #42B039

split-complementary

#397DB0 #B03942 #B0A739

monochromatic

#1B3B54 #2A5C82 #397DB0 #5C9BCA #8AB7D9

Accessibility & contrast

On white

4.44

#397DB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#397DB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397DB0

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397DB0	#FFFFFF	#000000	##000000
##397DB0	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)

#667EB2

Deuteranopia (green-blind)

#5673AF

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #397db0;
/* rgb */ color: rgb(57, 125, 176);
/* oklch */ color: oklch(56.9% 0.105 243.9);

Tailwind

colors: {
  custom: {
    50: '#7ca2c8',
    500: '#397db0',
    950: '#000000',
  },
}

SCSS

$custom: #397db0;
$custom-light: #7ca2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#397db0",
  "rgb": {
    "r": 57,
    "g": 125,
    "b": 176
  },
  "hsl": {
    "h": 205.714,
    "s": 51.073,
    "l": 45.686
  },
  "oklch": {
    "l": 0.56892,
    "c": 0.10468,
    "h": 243.9
  },
  "luminance": 0.18672
}

Semantic roles & 50–950 ramp

primary

#397DB0

secondary

#C49E81

accent

#8A4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #397DB0

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

Preview Lab → · Contrast checker → · Palette generator →