#397FD1#397FD1

#397FD1 is a mid, vivid cyan. Relative luminance 0.207; OKLCH L 59.2% C 0.144 H 254.3°. Best body text is #000000 at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#397FD1
RGB	rgb(57, 127, 209)
HSL	hsl(212, 62%, 52%)
HSV	hsv(212, 73%, 82%)
CMYK	cmyk(72.7%, 39.2%, 0%, 18%)
CIE-LAB	lab(52.56, 5.68, -48.62)
CIE-LCH	lch(52.56, 48.95, 276.67°)
OKLab	oklab(59.22% -0.039 -0.1387)
OKLCH	oklch(59.22% 0.144 254.3)
XYZ	xyz(20.7811, 20.6497, 63.1998)
Luminance	0.2065 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397FD1 #D18B39

analogous

#39CBD1 #397FD1 #3F39D1

triadic

#397FD1 #D1397F #7FD139

tetradic

#397FD1 #D139CB #D18B39 #39D13F

square

#397FD1 #D139CB #D18B39 #39D13F

split-complementary

#397FD1 #D13F39 #CBD139

monochromatic

#1B4475 #2761A6 #397FD1 #6B9FDD #9CBFE8

Accessibility & contrast

On white

4.09

#397FD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.13

#397FD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397FD1

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397FD1	#FFFFFF	#000000	##000000
##397FD1	1.00	4.09	5.13	5.13
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.13	21.00	1.00	1.00
##000000	5.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5985D4

Deuteranopia (green-blind)

#4177CF

Tritanopia (blue-blind)

#00929E

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #397fd1;
/* rgb */ color: rgb(57, 127, 209);
/* oklch */ color: oklch(59.2% 0.144 254.3);

Tailwind

colors: {
  custom: {
    50: '#82a3df',
    500: '#397fd1',
    950: '#000000',
  },
}

SCSS

$custom: #397fd1;
$custom-light: #82a3df;
$custom-dark: #000000;

JSON

{
  "hex": "#397fd1",
  "rgb": {
    "r": 57,
    "g": 127,
    "b": 209
  },
  "hsl": {
    "h": 212.368,
    "s": 62.295,
    "l": 52.157
  },
  "oklch": {
    "l": 0.59218,
    "c": 0.14405,
    "h": 254.3
  },
  "luminance": 0.20652
}

Semantic roles & 50–950 ramp

primary

#397FD1

secondary

#D4B692

accent

#9A42E5

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #397FD1

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

Preview Lab → · Contrast checker → · Palette generator →