#397BB4#397BB4

#397BB4 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.6% C 0.111 H 247.4°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#397BB4
RGB	rgb(57, 123, 180)
HSL	hsl(208, 52%, 46%)
HSV	hsv(208, 68%, 71%)
CMYK	cmyk(68.3%, 31.7%, 0%, 29.4%)
CIE-LAB	lab(49.89, -2.28, -36.26)
CIE-LCH	lch(49.89, 36.33, 266.40°)
OKLab	oklab(56.64% -0.0428 -0.1026)
OKLCH	oklch(56.64% 0.111 247.4)
XYZ	xyz(17.0054, 18.3293, 45.8129)
Luminance	0.1833 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397BB4 #B47239

analogous

#39B4B0 #397BB4 #393EB4

triadic

#397BB4 #B4397B #7BB439

tetradic

#397BB4 #B039B4 #B47239 #3EB439

square

#397BB4 #B039B4 #B47239 #3EB439

split-complementary

#397BB4 #B4393E #B4B039

monochromatic

#1C3B57 #2A5B86 #397BB4 #5E99CC #8DB7DB

Accessibility & contrast

On white

4.50

#397BB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#397BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397BB4

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397BB4	#FFFFFF	#000000	##000000
##397BB4	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627DB6

Deuteranopia (green-blind)

#5171B3

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397bb4;
/* rgb */ color: rgb(57, 123, 180);
/* oklch */ color: oklch(56.6% 0.111 247.4);

Tailwind

colors: {
  custom: {
    50: '#7da0ca',
    500: '#397bb4',
    950: '#000000',
  },
}

SCSS

$custom: #397bb4;
$custom-light: #7da0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#397bb4",
  "rgb": {
    "r": 57,
    "g": 123,
    "b": 180
  },
  "hsl": {
    "h": 207.805,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.56635,
    "c": 0.11115,
    "h": 247.4
  },
  "luminance": 0.18331
}

Semantic roles & 50–950 ramp

primary

#397BB4

secondary

#C5A283

accent

#8F4CDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #397BB4

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

Preview Lab → · Contrast checker → · Palette generator →