#397D9B#397D9B

#397D9B is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.9% C 0.083 H 229.7°. Best body text is #000000 at 4.58:1 contrast (WCAG AA passes).

Color values

HEX	#397D9B
RGB	rgb(57, 125, 155)
HSL	hsl(198, 46%, 42%)
HSV	hsv(198, 63%, 61%)
CMYK	cmyk(63.2%, 19.4%, 0%, 39.2%)
CIE-LAB	lab(49.38, -11.99, -22.53)
CIE-LCH	lch(49.38, 25.52, 241.98°)
OKLab	oklab(55.86% -0.0534 -0.0629)
OKLCH	oklch(55.86% 0.083 229.7)
XYZ	xyz(14.9350, 17.9021, 33.6724)
Luminance	0.1790 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397D9B #9B5739

analogous

#399B88 #397D9B #394C9B

triadic

#397D9B #9B397D #7D9B39

tetradic

#397D9B #88399B #9B5739 #4C9B39

square

#397D9B #88399B #9B5739 #4C9B39

split-complementary

#397D9B #9B394C #9B8839

monochromatic

#183542 #29596E #397D9B #529EBF #7FB7D0

Accessibility & contrast

On white

4.58

#397D9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#397D9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397D9B

4.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397D9B	#FFFFFF	#000000	##000000
##397D9B	1.00	4.58	4.58	4.58
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.58	21.00	1.00	1.00
##000000	4.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7B9C

Deuteranopia (green-blind)

#60719B

Tritanopia (blue-blind)

#008587

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #397d9b;
/* rgb */ color: rgb(57, 125, 155);
/* oklch */ color: oklch(55.9% 0.083 229.7);

Tailwind

colors: {
  custom: {
    50: '#79a2b8',
    500: '#397d9b',
    950: '#000000',
  },
}

SCSS

$custom: #397d9b;
$custom-light: #79a2b8;
$custom-dark: #000000;

JSON

{
  "hex": "#397d9b",
  "rgb": {
    "r": 57,
    "g": 125,
    "b": 155
  },
  "hsl": {
    "h": 198.367,
    "s": 46.226,
    "l": 41.569
  },
  "oklch": {
    "l": 0.55857,
    "c": 0.08256,
    "h": 229.7
  },
  "luminance": 0.17904
}

Semantic roles & 50–950 ramp

primary

#397D9B

secondary

#B98B77

accent

#7A52D6

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #397D9B

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

Preview Lab → · Contrast checker → · Palette generator →