#397ADF#397ADF

#397ADF is a mid, vivid blue. Relative luminance 0.201; OKLCH L 59.0% C 0.168 H 259.1°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#397ADF
RGB	rgb(57, 122, 223)
HSL	hsl(217, 72%, 55%)
HSV	hsv(217, 74%, 87%)
CMYK	cmyk(74.4%, 45.3%, 0%, 12.5%)
CIE-LAB	lab(51.97, 13.86, -57.48)
CIE-LCH	lch(51.97, 59.13, 283.55°)
OKLab	oklab(59.02% -0.0318 -0.1648)
OKLCH	oklch(59.02% 0.168 259.1)
XYZ	xyz(21.9613, 20.1142, 72.5227)
Luminance	0.2012 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397ADF #DF9E39

analogous

#39CDDF #397ADF #4B39DF

triadic

#397ADF #DF397A #7ADF39

tetradic

#397ADF #DF39CD #DF9E39 #39DF4B

square

#397ADF #DF39CD #DF9E39 #39DF4B

split-complementary

#397ADF #DF4B39 #CDDF39

monochromatic

#164288 #1E5CBC #397ADF #6E9DE8 #A2C1F0

Accessibility & contrast

On white

4.18

#397ADF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#397ADF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397ADF

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397ADF	#FFFFFF	#000000	##000000
##397ADF	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4584E3

Deuteranopia (green-blind)

#2075DD

Tritanopia (blue-blind)

#0092A2

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #397adf;
/* rgb */ color: rgb(57, 122, 223);
/* oklch */ color: oklch(59.0% 0.168 259.1);

Tailwind

colors: {
  custom: {
    50: '#859fe9',
    500: '#397adf',
    950: '#000000',
  },
}

SCSS

$custom: #397adf;
$custom-light: #859fe9;
$custom-dark: #000000;

JSON

{
  "hex": "#397adf",
  "rgb": {
    "r": 57,
    "g": 122,
    "b": 223
  },
  "hsl": {
    "h": 216.506,
    "s": 72.174,
    "l": 54.902
  },
  "oklch": {
    "l": 0.59016,
    "c": 0.16784,
    "h": 259.1
  },
  "luminance": 0.20117
}

Semantic roles & 50–950 ramp

primary

#397ADF

secondary

#DDC197

accent

#A839EF

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #397ADF

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

Preview Lab → · Contrast checker → · Palette generator →