#397CDA#397CDA

#397CDA is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.159 H 257.5°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#397CDA
RGB	rgb(57, 124, 218)
HSL	hsl(215, 69%, 54%)
HSV	hsv(215, 74%, 85%)
CMYK	cmyk(73.9%, 43.1%, 0%, 14.5%)
CIE-LAB	lab(52.22, 10.79, -54.25)
CIE-LCH	lch(52.22, 55.31, 281.25°)
OKLab	oklab(59.12% -0.0344 -0.1553)
OKLCH	oklch(59.12% 0.159 257.5)
XYZ	xyz(21.5453, 20.3447, 69.1075)
Luminance	0.2035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397CDA #DA9739

analogous

#39CDDA #397CDA #4739DA

triadic

#397CDA #DA397C #7CDA39

tetradic

#397CDA #DA39CD #DA9739 #39DA47

square

#397CDA #DA39CD #DA9739 #39DA47

split-complementary

#397CDA #DA4739 #CDDA39

monochromatic

#184481 #225FB4 #397CDA #6D9EE4 #A0C0ED

Accessibility & contrast

On white

4.14

#397CDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#397CDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397CDA

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397CDA	#FFFFFF	#000000	##000000
##397CDA	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D85DE

Deuteranopia (green-blind)

#2F76D8

Tritanopia (blue-blind)

#0092A0

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #397cda;
/* rgb */ color: rgb(57, 124, 218);
/* oklch */ color: oklch(59.1% 0.159 257.5);

Tailwind

colors: {
  custom: {
    50: '#84a1e6',
    500: '#397cda',
    950: '#000000',
  },
}

SCSS

$custom: #397cda;
$custom-light: #84a1e6;
$custom-dark: #000000;

JSON

{
  "hex": "#397cda",
  "rgb": {
    "r": 57,
    "g": 124,
    "b": 218
  },
  "hsl": {
    "h": 215.031,
    "s": 68.511,
    "l": 53.922
  },
  "oklch": {
    "l": 0.5912,
    "c": 0.15903,
    "h": 257.5
  },
  "luminance": 0.20347
}

Semantic roles & 50–950 ramp

primary

#397CDA

secondary

#DABD95

accent

#A33CEB

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #397CDA

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

Preview Lab → · Contrast checker → · Palette generator →