#397F99#397F99

#397F99 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.3% C 0.080 H 225.4°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#397F99
RGB	rgb(57, 127, 153)
HSL	hsl(196, 46%, 41%)
HSV	hsv(196, 63%, 60%)
CMYK	cmyk(62.7%, 17%, 0%, 40%)
CIE-LAB	lab(49.91, -13.77, -20.54)
CIE-LCH	lch(49.91, 24.72, 236.16°)
OKLab	oklab(56.26% -0.0564 -0.0572)
OKLCH	oklch(56.26% 0.08 225.4)
XYZ	xyz(15.0242, 18.3470, 32.8804)
Luminance	0.1835 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397F99 #995339

analogous

#399983 #397F99 #394F99

triadic

#397F99 #99397F #7F9939

tetradic

#397F99 #833999 #995339 #4F9939

square

#397F99 #833999 #995339 #4F9939

split-complementary

#397F99 #99394F #998339

monochromatic

#183540 #285A6C #397F99 #51A1BE #7EB9CF

Accessibility & contrast

On white

4.50

#397F99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#397F99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397F99

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397F99	#FFFFFF	#000000	##000000
##397F99	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)

#717C9A

Deuteranopia (green-blind)

#637299

Tritanopia (blue-blind)

#008787

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397f99;
/* rgb */ color: rgb(57, 127, 153);
/* oklch */ color: oklch(56.3% 0.080 225.4);

Tailwind

colors: {
  custom: {
    50: '#79a4b7',
    500: '#397f99',
    950: '#000000',
  },
}

SCSS

$custom: #397f99;
$custom-light: #79a4b7;
$custom-dark: #000000;

JSON

{
  "hex": "#397f99",
  "rgb": {
    "r": 57,
    "g": 127,
    "b": 153
  },
  "hsl": {
    "h": 196.25,
    "s": 45.714,
    "l": 41.176
  },
  "oklch": {
    "l": 0.56259,
    "c": 0.0804,
    "h": 225.4
  },
  "luminance": 0.18349
}

Semantic roles & 50–950 ramp

primary

#397F99

secondary

#B88876

accent

#7652D5

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #397F99

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

Preview Lab → · Contrast checker → · Palette generator →