#397BB0#397BB0

#397BB0 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.4% C 0.106 H 245.5°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#397BB0
RGB	rgb(57, 123, 176)
HSL	hsl(207, 51%, 46%)
HSV	hsv(207, 68%, 69%)
CMYK	cmyk(67.6%, 30.1%, 0%, 31%)
CIE-LAB	lab(49.70, -3.68, -34.25)
CIE-LCH	lch(49.70, 34.45, 263.86°)
OKLab	oklab(56.42% -0.044 -0.0967)
OKLCH	oklch(56.42% 0.106 245.5)
XYZ	xyz(16.6038, 18.1686, 43.6977)
Luminance	0.1817 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397BB0 #B06E39

analogous

#39B0A9 #397BB0 #393FB0

triadic

#397BB0 #B0397B #7BB039

tetradic

#397BB0 #A939B0 #B06E39 #3FB039

square

#397BB0 #A939B0 #B06E39 #3FB039

split-complementary

#397BB0 #B0393F #B0A939

monochromatic

#1B3A54 #2A5B82 #397BB0 #5C99CA #8AB6D9

Accessibility & contrast

On white

4.53

#397BB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#397BB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397BB0

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397BB0	#FFFFFF	#000000	##000000
##397BB0	1.00	4.53	4.63	4.63
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB2

Deuteranopia (green-blind)

#5371AF

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #397bb0;
/* rgb */ color: rgb(57, 123, 176);
/* oklch */ color: oklch(56.4% 0.106 245.5);

Tailwind

colors: {
  custom: {
    50: '#7ca1c8',
    500: '#397bb0',
    950: '#000000',
  },
}

SCSS

$custom: #397bb0;
$custom-light: #7ca1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#397bb0",
  "rgb": {
    "r": 57,
    "g": 123,
    "b": 176
  },
  "hsl": {
    "h": 206.723,
    "s": 51.073,
    "l": 45.686
  },
  "oklch": {
    "l": 0.56419,
    "c": 0.10628,
    "h": 245.5
  },
  "luminance": 0.1817
}

Semantic roles & 50–950 ramp

primary

#397BB0

secondary

#C49F81

accent

#8C4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #397BB0

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

Preview Lab → · Contrast checker → · Palette generator →