#397BB2#397BB2

#397BB2 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.5% C 0.109 H 246.5°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#397BB2
RGB	rgb(57, 123, 178)
HSL	hsl(207, 51%, 46%)
HSV	hsv(207, 68%, 70%)
CMYK	cmyk(68%, 30.9%, 0%, 30.2%)
CIE-LAB	lab(49.80, -2.98, -35.25)
CIE-LCH	lch(49.80, 35.38, 265.17°)
OKLab	oklab(56.53% -0.0434 -0.0997)
OKLCH	oklch(56.53% 0.109 246.5)
XYZ	xyz(16.8032, 18.2484, 44.7476)
Luminance	0.1825 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397BB2 #B27039

analogous

#39B2AC #397BB2 #393EB2

triadic

#397BB2 #B2397B #7BB239

tetradic

#397BB2 #AC39B2 #B27039 #3EB239

square

#397BB2 #AC39B2 #B27039 #3EB239

split-complementary

#397BB2 #B2393E #B2AC39

monochromatic

#1B3B55 #2A5B84 #397BB2 #5D99CB #8BB6DA

Accessibility & contrast

On white

4.52

#397BB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#397BB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397BB2

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397BB2	#FFFFFF	#000000	##000000
##397BB2	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB4

Deuteranopia (green-blind)

#5271B1

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #397bb2;
/* rgb */ color: rgb(57, 123, 178);
/* oklch */ color: oklch(56.5% 0.109 246.5);

Tailwind

colors: {
  custom: {
    50: '#7da0c9',
    500: '#397bb2',
    950: '#000000',
  },
}

SCSS

$custom: #397bb2;
$custom-light: #7da0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#397bb2",
  "rgb": {
    "r": 57,
    "g": 123,
    "b": 178
  },
  "hsl": {
    "h": 207.273,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.56526,
    "c": 0.1087,
    "h": 246.5
  },
  "luminance": 0.1825
}

Semantic roles & 50–950 ramp

primary

#397BB2

secondary

#C4A082

accent

#8D4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #397BB2

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

Preview Lab → · Contrast checker → · Palette generator →