#397AD7#397AD7

#397AD7 is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.5% C 0.157 H 257.8°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#397AD7
RGB	rgb(57, 122, 215)
HSL	hsl(215, 66%, 53%)
HSV	hsv(215, 73%, 84%)
CMYK	cmyk(73.5%, 43.3%, 0%, 15.7%)
CIE-LAB	lab(51.49, 10.93, -53.73)
CIE-LCH	lch(51.49, 54.83, 281.50°)
OKLab	oklab(58.49% -0.0333 -0.1538)
OKLCH	oklch(58.49% 0.157 257.8)
XYZ	xyz(20.9081, 19.6929, 66.9760)
Luminance	0.1969 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397AD7 #D79639

analogous

#39C9D7 #397AD7 #4739D7

triadic

#397AD7 #D7397A #7AD739

tetradic

#397AD7 #D739C9 #D79639 #39D747

square

#397AD7 #D739C9 #D79639 #39D747

split-complementary

#397AD7 #D74739 #C9D739

monochromatic

#19427C #235DAF #397AD7 #6C9CE1 #9FBEEC

Accessibility & contrast

On white

4.25

#397AD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#397AD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397AD7

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397AD7	#FFFFFF	#000000	##000000
##397AD7	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C83DB

Deuteranopia (green-blind)

#2E74D5

Tritanopia (blue-blind)

#00909E

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #397ad7;
/* rgb */ color: rgb(57, 122, 215);
/* oklch */ color: oklch(58.5% 0.157 257.8);

Tailwind

colors: {
  custom: {
    50: '#839fe4',
    500: '#397ad7',
    950: '#000000',
  },
}

SCSS

$custom: #397ad7;
$custom-light: #839fe4;
$custom-dark: #000000;

JSON

{
  "hex": "#397ad7",
  "rgb": {
    "r": 57,
    "g": 122,
    "b": 215
  },
  "hsl": {
    "h": 215.316,
    "s": 66.387,
    "l": 53.333
  },
  "oklch": {
    "l": 0.58493,
    "c": 0.15734,
    "h": 257.8
  },
  "luminance": 0.19695
}

Semantic roles & 50–950 ramp

primary

#397AD7

secondary

#D8BC94

accent

#A33EE9

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E15

muted

#7D7E84

Preview Lab

Preview with #397AD7

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

Preview Lab → · Contrast checker → · Palette generator →