#397E9B#397E9B

#397E9B is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.1% C 0.082 H 228.5°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#397E9B
RGB	rgb(57, 126, 155)
HSL	hsl(198, 46%, 42%)
HSV	hsv(198, 63%, 61%)
CMYK	cmyk(63.2%, 18.7%, 0%, 39.2%)
CIE-LAB	lab(49.69, -12.55, -22.06)
CIE-LCH	lch(49.69, 25.38, 240.35°)
OKLab	oklab(56.1% -0.0545 -0.0616)
OKLCH	oklch(56.1% 0.082 228.5)
XYZ	xyz(15.0623, 18.1566, 33.7148)
Luminance	0.1816 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397E9B #9B5639

analogous

#399B87 #397E9B #394D9B

triadic

#397E9B #9B397E #7E9B39

tetradic

#397E9B #87399B #9B5639 #4D9B39

square

#397E9B #87399B #9B5639 #4D9B39

split-complementary

#397E9B #9B394D #9B8739

monochromatic

#183542 #295A6E #397E9B #529FBF #7FB8D0

Accessibility & contrast

On white

4.53

#397E9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#397E9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397E9B

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397E9B	#FFFFFF	#000000	##000000
##397E9B	1.00	4.53	4.63	4.63
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7C9C

Deuteranopia (green-blind)

#61729B

Tritanopia (blue-blind)

#008687

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #397e9b;
/* rgb */ color: rgb(57, 126, 155);
/* oklch */ color: oklch(56.1% 0.082 228.5);

Tailwind

colors: {
  custom: {
    50: '#7aa3b8',
    500: '#397e9b',
    950: '#000000',
  },
}

SCSS

$custom: #397e9b;
$custom-light: #7aa3b8;
$custom-dark: #000000;

JSON

{
  "hex": "#397e9b",
  "rgb": {
    "r": 57,
    "g": 126,
    "b": 155
  },
  "hsl": {
    "h": 197.755,
    "s": 46.226,
    "l": 41.569
  },
  "oklch": {
    "l": 0.56103,
    "c": 0.08227,
    "h": 228.5
  },
  "luminance": 0.18158
}

Semantic roles & 50–950 ramp

primary

#397E9B

secondary

#B98A77

accent

#7952D6

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #397E9B

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

Preview Lab → · Contrast checker → · Palette generator →