#397CB3#397CB3

#397CB3 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.8% C 0.109 H 246.2°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#397CB3
RGB	rgb(57, 124, 179)
HSL	hsl(207, 52%, 46%)
HSV	hsv(207, 68%, 70%)
CMYK	cmyk(68.2%, 30.7%, 0%, 29.8%)
CIE-LAB	lab(50.14, -3.23, -35.29)
CIE-LCH	lch(50.14, 35.44, 264.78°)
OKLab	oklab(56.82% -0.0441 -0.0998)
OKLCH	oklch(56.82% 0.109 246.2)
XYZ	xyz(17.0286, 18.5380, 45.3199)
Luminance	0.1854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397CB3 #B37039

analogous

#39B3AD #397CB3 #393FB3

triadic

#397CB3 #B3397C #7CB339

tetradic

#397CB3 #AD39B3 #B37039 #3FB339

square

#397CB3 #AD39B3 #B37039 #3FB339

split-complementary

#397CB3 #B3393F #B3AD39

monochromatic

#1B3C56 #2A5C85 #397CB3 #5E9ACC #8CB7DA

Accessibility & contrast

On white

4.46

#397CB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#397CB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397CB3

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397CB3	#FFFFFF	#000000	##000000
##397CB3	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637EB5

Deuteranopia (green-blind)

#5372B2

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397cb3;
/* rgb */ color: rgb(57, 124, 179);
/* oklch */ color: oklch(56.8% 0.109 246.2);

Tailwind

colors: {
  custom: {
    50: '#7da1ca',
    500: '#397cb3',
    950: '#000000',
  },
}

SCSS

$custom: #397cb3;
$custom-light: #7da1ca;
$custom-dark: #000000;

JSON

{
  "hex": "#397cb3",
  "rgb": {
    "r": 57,
    "g": 124,
    "b": 179
  },
  "hsl": {
    "h": 207.049,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.56815,
    "c": 0.10907,
    "h": 246.2
  },
  "luminance": 0.1854
}

Semantic roles & 50–950 ramp

primary

#397CB3

secondary

#C5A183

accent

#8D4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #397CB3

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

Preview Lab → · Contrast checker → · Palette generator →