#397E9F#397E9F

#397E9F is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.3% C 0.086 H 231.9°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#397E9F
RGB	rgb(57, 126, 159)
HSL	hsl(199, 47%, 42%)
HSV	hsv(199, 64%, 62%)
CMYK	cmyk(64.2%, 20.8%, 0%, 37.6%)
CIE-LAB	lab(49.85, -11.23, -24.14)
CIE-LCH	lch(49.85, 26.62, 245.05°)
OKLab	oklab(56.29% -0.053 -0.0675)
OKLCH	oklch(56.29% 0.086 231.9)
XYZ	xyz(15.4038, 18.2932, 35.5133)
Luminance	0.1830 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397E9F #9F5A39

analogous

#399F8D #397E9F #394B9F

triadic

#397E9F #9F397E #7E9F39

tetradic

#397E9F #8D399F #9F5A39 #4B9F39

square

#397E9F #8D399F #9F5A39 #4B9F39

split-complementary

#397E9F #9F394B #9F8D39

monochromatic

#193745 #295A72 #397E9F #549EC2 #81B7D2

Accessibility & contrast

On white

4.51

#397E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#397E9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397E9F

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397E9F	#FFFFFF	#000000	##000000
##397E9F	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7CA1

Deuteranopia (green-blind)

#5F729F

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397e9f;
/* rgb */ color: rgb(57, 126, 159);
/* oklch */ color: oklch(56.3% 0.086 231.9);

Tailwind

colors: {
  custom: {
    50: '#7aa3bb',
    500: '#397e9f',
    950: '#000000',
  },
}

SCSS

$custom: #397e9f;
$custom-light: #7aa3bb;
$custom-dark: #000000;

JSON

{
  "hex": "#397e9f",
  "rgb": {
    "r": 57,
    "g": 126,
    "b": 159
  },
  "hsl": {
    "h": 199.412,
    "s": 47.222,
    "l": 42.353
  },
  "oklch": {
    "l": 0.56288,
    "c": 0.08586,
    "h": 231.9
  },
  "luminance": 0.18295
}

Semantic roles & 50–950 ramp

primary

#397E9F

secondary

#BB8E78

accent

#7C51D7

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #397E9F

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

Preview Lab → · Contrast checker → · Palette generator →