#397FB3#397FB3

#397FB3 is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.5% C 0.107 H 243.7°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#397FB3
RGB	rgb(57, 127, 179)
HSL	hsl(206, 52%, 46%)
HSV	hsv(206, 68%, 70%)
CMYK	cmyk(68.2%, 29.1%, 0%, 29.8%)
CIE-LAB	lab(51.04, -5.00, -33.88)
CIE-LCH	lch(51.04, 34.25, 261.61°)
OKLab	oklab(57.52% -0.0472 -0.0956)
OKLCH	oklch(57.52% 0.107 243.7)
XYZ	xyz(17.4103, 19.3014, 45.4471)
Luminance	0.1930 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397FB3 #B36D39

analogous

#39B3AA #397FB3 #3942B3

triadic

#397FB3 #B3397F #7FB339

tetradic

#397FB3 #AA39B3 #B36D39 #42B339

square

#397FB3 #AA39B3 #B36D39 #42B339

split-complementary

#397FB3 #B33942 #B3AA39

monochromatic

#1B3D56 #2A5E85 #397FB3 #5E9DCC #8CB9DA

Accessibility & contrast

On white

4.32

#397FB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#397FB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397FB3

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397FB3	#FFFFFF	#000000	##000000
##397FB3	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6880B5

Deuteranopia (green-blind)

#5774B2

Tritanopia (blue-blind)

#008C91

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #397fb3;
/* rgb */ color: rgb(57, 127, 179);
/* oklch */ color: oklch(57.5% 0.107 243.7);

Tailwind

colors: {
  custom: {
    50: '#7da3ca',
    500: '#397fb3',
    950: '#000000',
  },
}

SCSS

$custom: #397fb3;
$custom-light: #7da3ca;
$custom-dark: #000000;

JSON

{
  "hex": "#397fb3",
  "rgb": {
    "r": 57,
    "g": 127,
    "b": 179
  },
  "hsl": {
    "h": 205.574,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.57522,
    "c": 0.10666,
    "h": 243.7
  },
  "luminance": 0.19303
}

Semantic roles & 50–950 ramp

primary

#397FB3

secondary

#C59F83

accent

#894DDB

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #397FB3

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

Preview Lab → · Contrast checker → · Palette generator →