#397BB5#397BB5

#397BB5 is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.7% C 0.112 H 247.8°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#397BB5
RGB	rgb(57, 123, 181)
HSL	hsl(208, 52%, 47%)
HSV	hsv(208, 69%, 71%)
CMYK	cmyk(68.5%, 32%, 0%, 29%)
CIE-LAB	lab(49.94, -1.93, -36.76)
CIE-LCH	lch(49.94, 36.81, 267.00°)
OKLab	oklab(56.69% -0.0425 -0.104)
OKLCH	oklch(56.69% 0.112 247.8)
XYZ	xyz(17.1077, 18.3702, 46.3513)
Luminance	0.1837 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397BB5 #B57339

analogous

#39B5B1 #397BB5 #393DB5

triadic

#397BB5 #B5397B #7BB539

tetradic

#397BB5 #B139B5 #B57339 #3DB539

square

#397BB5 #B139B5 #B57339 #3DB539

split-complementary

#397BB5 #B5393D #B5B139

monochromatic

#1C3C58 #2A5B86 #397BB5 #5F99CD #8DB7DB

Accessibility & contrast

On white

4.49

#397BB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.67

#397BB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397BB5

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397BB5	#FFFFFF	#000000	##000000
##397BB5	1.00	4.49	4.67	4.67
#FFFFFF	4.49	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)

#617DB7

Deuteranopia (green-blind)

#5071B4

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397bb5;
/* rgb */ color: rgb(57, 123, 181);
/* oklch */ color: oklch(56.7% 0.112 247.8);

Tailwind

colors: {
  custom: {
    50: '#7da0cb',
    500: '#397bb5',
    950: '#000000',
  },
}

SCSS

$custom: #397bb5;
$custom-light: #7da0cb;
$custom-dark: #000000;

JSON

{
  "hex": "#397bb5",
  "rgb": {
    "r": 57,
    "g": 123,
    "b": 181
  },
  "hsl": {
    "h": 208.065,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.56689,
    "c": 0.11238,
    "h": 247.8
  },
  "luminance": 0.18372
}

Semantic roles & 50–950 ramp

primary

#397BB5

secondary

#C6A384

accent

#8F4CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #397BB5

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

Preview Lab → · Contrast checker → · Palette generator →