#397CB1#397CB1

#397CB1 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.7% C 0.107 H 245.2°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#397CB1
RGB	rgb(57, 124, 177)
HSL	hsl(207, 51%, 46%)
HSV	hsv(207, 68%, 69%)
CMYK	cmyk(67.8%, 29.9%, 0%, 30.6%)
CIE-LAB	lab(50.05, -3.93, -34.28)
CIE-LCH	lch(50.05, 34.51, 263.47°)
OKLab	oklab(56.71% -0.0447 -0.0968)
OKLCH	oklch(56.71% 0.107 245.2)
XYZ	xyz(16.8278, 18.4577, 44.2623)
Luminance	0.1846 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397CB1 #B16E39

analogous

#39B1AA #397CB1 #3940B1

triadic

#397CB1 #B1397C #7CB139

tetradic

#397CB1 #AA39B1 #B16E39 #40B139

square

#397CB1 #AA39B1 #B16E39 #40B139

split-complementary

#397CB1 #B13940 #B1AA39

monochromatic

#1B3B54 #2A5C83 #397CB1 #5D9ACB #8BB7DA

Accessibility & contrast

On white

4.48

#397CB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#397CB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397CB1

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397CB1	#FFFFFF	#000000	##000000
##397CB1	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647DB3

Deuteranopia (green-blind)

#5472B0

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397cb1;
/* rgb */ color: rgb(57, 124, 177);
/* oklch */ color: oklch(56.7% 0.107 245.2);

Tailwind

colors: {
  custom: {
    50: '#7da1c8',
    500: '#397cb1',
    950: '#000000',
  },
}

SCSS

$custom: #397cb1;
$custom-light: #7da1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#397cb1",
  "rgb": {
    "r": 57,
    "g": 124,
    "b": 177
  },
  "hsl": {
    "h": 206.5,
    "s": 51.282,
    "l": 45.882
  },
  "oklch": {
    "l": 0.56708,
    "c": 0.10666,
    "h": 245.2
  },
  "luminance": 0.18459
}

Semantic roles & 50–950 ramp

primary

#397CB1

secondary

#C49F82

accent

#8C4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #397CB1

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

Preview Lab → · Contrast checker → · Palette generator →