#397C9B#397C9B

#397C9B is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.6% C 0.083 H 230.9°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#397C9B
RGB	rgb(57, 124, 155)
HSL	hsl(199, 46%, 42%)
HSV	hsv(199, 63%, 61%)
CMYK	cmyk(63.2%, 20%, 0%, 39.2%)
CIE-LAB	lab(49.07, -11.42, -23.00)
CIE-LCH	lch(49.07, 25.68, 243.60°)
OKLab	oklab(55.61% -0.0523 -0.0643)
OKLCH	oklch(55.61% 0.083 230.9)
XYZ	xyz(14.8091, 17.6502, 33.6304)
Luminance	0.1765 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397C9B #9B5839

analogous

#399B89 #397C9B #394B9B

triadic

#397C9B #9B397C #7C9B39

tetradic

#397C9B #89399B #9B5839 #4B9B39

square

#397C9B #89399B #9B5839 #4B9B39

split-complementary

#397C9B #9B394B #9B8939

monochromatic

#183442 #29586E #397C9B #529DBF #7FB6D0

Accessibility & contrast

On white

4.64

#397C9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#397C9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #397C9B

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397C9B	#FFFFFF	#000000	##FFFFFF
##397C9B	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7A9D

Deuteranopia (green-blind)

#5F709B

Tritanopia (blue-blind)

#008586

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #397c9b;
/* rgb */ color: rgb(57, 124, 155);
/* oklch */ color: oklch(55.6% 0.083 230.9);

Tailwind

colors: {
  custom: {
    50: '#79a2b8',
    500: '#397c9b',
    950: '#000000',
  },
}

SCSS

$custom: #397c9b;
$custom-light: #79a2b8;
$custom-dark: #000000;

JSON

{
  "hex": "#397c9b",
  "rgb": {
    "r": 57,
    "g": 124,
    "b": 155
  },
  "hsl": {
    "h": 198.98,
    "s": 46.226,
    "l": 41.569
  },
  "oklch": {
    "l": 0.55611,
    "c": 0.08289,
    "h": 230.9
  },
  "luminance": 0.17652
}

Semantic roles & 50–950 ramp

primary

#397C9B

secondary

#B98C77

accent

#7C52D6

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0F11

muted

#7C7E80

Preview Lab

Preview with #397C9B

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

Preview Lab → · Contrast checker → · Palette generator →