#397DB4#397DB4

#397DB4 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.1% C 0.109 H 245.8°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#397DB4
RGB	rgb(57, 125, 180)
HSL	hsl(207, 52%, 46%)
HSV	hsv(207, 68%, 71%)
CMYK	cmyk(68.3%, 30.6%, 0%, 29.4%)
CIE-LAB	lab(50.49, -3.47, -35.32)
CIE-LCH	lch(50.49, 35.49, 264.39°)
OKLab	oklab(57.1% -0.0448 -0.0998)
OKLCH	oklch(57.1% 0.109 245.8)
XYZ	xyz(17.2561, 18.8306, 45.8964)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397DB4 #B47039

analogous

#39B4AE #397DB4 #3940B4

triadic

#397DB4 #B4397D #7DB439

tetradic

#397DB4 #AE39B4 #B47039 #40B439

square

#397DB4 #AE39B4 #B47039 #40B439

split-complementary

#397DB4 #B43940 #B4AE39

monochromatic

#1C3C57 #2A5D86 #397DB4 #5E9BCC #8DB8DB

Accessibility & contrast

On white

4.41

#397DB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#397DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397DB4

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397DB4	#FFFFFF	#000000	##000000
##397DB4	1.00	4.41	4.77	4.77
#FFFFFF	4.41	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)

#647FB6

Deuteranopia (green-blind)

#5373B3

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #397db4;
/* rgb */ color: rgb(57, 125, 180);
/* oklch */ color: oklch(57.1% 0.109 245.8);

Tailwind

colors: {
  custom: {
    50: '#7da2ca',
    500: '#397db4',
    950: '#000000',
  },
}

SCSS

$custom: #397db4;
$custom-light: #7da2ca;
$custom-dark: #000000;

JSON

{
  "hex": "#397db4",
  "rgb": {
    "r": 57,
    "g": 125,
    "b": 180
  },
  "hsl": {
    "h": 206.829,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.57104,
    "c": 0.10945,
    "h": 245.8
  },
  "luminance": 0.18832
}

Semantic roles & 50–950 ramp

primary

#397DB4

secondary

#C5A183

accent

#8C4CDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #397DB4

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

Preview Lab → · Contrast checker → · Palette generator →