#397DB1#397DB1

#397DB1 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.9% C 0.106 H 244.4°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#397DB1
RGB	rgb(57, 125, 177)
HSL	hsl(206, 51%, 46%)
HSV	hsv(206, 68%, 69%)
CMYK	cmyk(67.8%, 29.4%, 0%, 30.6%)
CIE-LAB	lab(50.35, -4.52, -33.81)
CIE-LCH	lch(50.35, 34.11, 262.39°)
OKLab	oklab(56.94% -0.0457 -0.0955)
OKLCH	oklch(56.94% 0.106 244.4)
XYZ	xyz(16.9538, 18.7096, 44.3043)
Luminance	0.1871 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397DB1 #B16D39

analogous

#39B1A9 #397DB1 #3941B1

triadic

#397DB1 #B1397D #7DB139

tetradic

#397DB1 #A939B1 #B16D39 #41B139

square

#397DB1 #A939B1 #B16D39 #41B139

split-complementary

#397DB1 #B13941 #B1A939

monochromatic

#1B3C54 #2A5C83 #397DB1 #5D9BCB #8BB7DA

Accessibility & contrast

On white

4.43

#397DB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#397DB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397DB1

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397DB1	#FFFFFF	#000000	##000000
##397DB1	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667EB3

Deuteranopia (green-blind)

#5573B0

Tritanopia (blue-blind)

#008A8F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #397db1;
/* rgb */ color: rgb(57, 125, 177);
/* oklch */ color: oklch(56.9% 0.106 244.4);

Tailwind

colors: {
  custom: {
    50: '#7da2c8',
    500: '#397db1',
    950: '#000000',
  },
}

SCSS

$custom: #397db1;
$custom-light: #7da2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#397db1",
  "rgb": {
    "r": 57,
    "g": 125,
    "b": 177
  },
  "hsl": {
    "h": 206,
    "s": 51.282,
    "l": 45.882
  },
  "oklch": {
    "l": 0.56944,
    "c": 0.10587,
    "h": 244.4
  },
  "luminance": 0.18711
}

Semantic roles & 50–950 ramp

primary

#397DB1

secondary

#C49E82

accent

#8A4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #397DB1

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

Preview Lab → · Contrast checker → · Palette generator →