#397E8F#397E8F

#397E8F is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.6% C 0.074 H 216.3°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#397E8F
RGB	rgb(57, 126, 143)
HSL	hsl(192, 43%, 39%)
HSV	hsv(192, 60%, 56%)
CMYK	cmyk(60.1%, 11.9%, 0%, 43.9%)
CIE-LAB	lab(49.22, -16.41, -15.74)
CIE-LCH	lch(49.22, 22.74, 223.80°)
OKLab	oklab(55.58% -0.0594 -0.0437)
OKLCH	oklch(55.58% 0.074 216.3)
XYZ	xyz(14.1041, 17.7734, 28.6686)
Luminance	0.1777 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397E8F #8F4A39

analogous

#398F75 #397E8F #39538F

triadic

#397E8F #8F397E #7E8F39

tetradic

#397E8F #75398F #8F4A39 #538F39

square

#397E8F #75398F #8F4A39 #538F39

split-complementary

#397E8F #8F3953 #8F7539

monochromatic

#163137 #285763 #397E8F #4DA3B8 #79BACA

Accessibility & contrast

On white

4.61

#397E8F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#397E8F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #397E8F

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397E8F	#FFFFFF	#000000	##FFFFFF
##397E8F	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#727A90

Deuteranopia (green-blind)

#66718F

Tritanopia (blue-blind)

#008483

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #397e8f;
/* rgb */ color: rgb(57, 126, 143);
/* oklch */ color: oklch(55.6% 0.074 216.3);

Tailwind

colors: {
  custom: {
    50: '#78a3af',
    500: '#397e8f',
    950: '#000000',
  },
}

SCSS

$custom: #397e8f;
$custom-light: #78a3af;
$custom-dark: #000000;

JSON

{
  "hex": "#397e8f",
  "rgb": {
    "r": 57,
    "g": 126,
    "b": 143
  },
  "hsl": {
    "h": 191.86,
    "s": 43,
    "l": 39.216
  },
  "oklch": {
    "l": 0.55576,
    "c": 0.07371,
    "h": 216.3
  },
  "luminance": 0.17775
}

Semantic roles & 50–950 ramp

primary

#397E8F

secondary

#B37E71

accent

#6E55D3

background

#F7FAFA

surface

#EEF3F4

border

#C9CDCE

text

#090F10

muted

#7B7F7F

Preview Lab

Preview with #397E8F

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

Preview Lab → · Contrast checker → · Palette generator →