#397F9B#397F9B

#397F9B is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.3% C 0.082 H 227.2°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#397F9B
RGB	rgb(57, 127, 155)
HSL	hsl(197, 46%, 42%)
HSV	hsv(197, 63%, 61%)
CMYK	cmyk(63.2%, 18.1%, 0%, 39.2%)
CIE-LAB	lab(49.99, -13.11, -21.58)
CIE-LCH	lch(49.99, 25.25, 238.71°)
OKLab	oklab(56.35% -0.0557 -0.0602)
OKLCH	oklch(56.35% 0.082 227.2)
XYZ	xyz(15.1908, 18.4136, 33.7576)
Luminance	0.1842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397F9B #9B5539

analogous

#399B86 #397F9B #394E9B

triadic

#397F9B #9B397F #7F9B39

tetradic

#397F9B #86399B #9B5539 #4E9B39

square

#397F9B #86399B #9B5539 #4E9B39

split-complementary

#397F9B #9B394E #9B8639

monochromatic

#183642 #295A6E #397F9B #52A0BF #7FB9D0

Accessibility & contrast

On white

4.48

#397F9B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#397F9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397F9B

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397F9B	#FFFFFF	#000000	##000000
##397F9B	1.00	4.48	4.68	4.68
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#707D9C

Deuteranopia (green-blind)

#62729B

Tritanopia (blue-blind)

#008788

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397f9b;
/* rgb */ color: rgb(57, 127, 155);
/* oklch */ color: oklch(56.3% 0.082 227.2);

Tailwind

colors: {
  custom: {
    50: '#7aa4b8',
    500: '#397f9b',
    950: '#000000',
  },
}

SCSS

$custom: #397f9b;
$custom-light: #7aa4b8;
$custom-dark: #000000;

JSON

{
  "hex": "#397f9b",
  "rgb": {
    "r": 57,
    "g": 127,
    "b": 155
  },
  "hsl": {
    "h": 197.143,
    "s": 46.226,
    "l": 41.569
  },
  "oklch": {
    "l": 0.56349,
    "c": 0.08201,
    "h": 227.2
  },
  "luminance": 0.18415
}

Semantic roles & 50–950 ramp

primary

#397F9B

secondary

#B98A77

accent

#7852D6

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #397F9B

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

Preview Lab → · Contrast checker → · Palette generator →