#397FD3#397FD3

#397FD3 is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.3% C 0.147 H 254.8°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#397FD3
RGB	rgb(57, 127, 211)
HSL	hsl(213, 64%, 53%)
HSV	hsv(213, 73%, 83%)
CMYK	cmyk(73%, 39.8%, 0%, 17.3%)
CIE-LAB	lab(52.67, 6.41, -49.58)
CIE-LCH	lch(52.67, 49.99, 277.36°)
OKLab	oklab(59.34% -0.0385 -0.1415)
OKLCH	oklch(59.34% 0.147 254.8)
XYZ	xyz(21.0302, 20.7494, 64.5121)
Luminance	0.2075 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397FD3 #D38D39

analogous

#39CCD3 #397FD3 #4039D3

triadic

#397FD3 #D3397F #7FD339

tetradic

#397FD3 #D339CC #D38D39 #39D340

square

#397FD3 #D339CC #D38D39 #39D340

split-complementary

#397FD3 #D34039 #CCD339

monochromatic

#1A4577 #2661A9 #397FD3 #6B9FDE #9DC0E9

Accessibility & contrast

On white

4.08

#397FD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#397FD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397FD3

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397FD3	#FFFFFF	#000000	##000000
##397FD3	1.00	4.08	5.15	5.15
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5785D6

Deuteranopia (green-blind)

#3F77D1

Tritanopia (blue-blind)

#00939F

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #397fd3;
/* rgb */ color: rgb(57, 127, 211);
/* oklch */ color: oklch(59.3% 0.147 254.8);

Tailwind

colors: {
  custom: {
    50: '#83a3e1',
    500: '#397fd3',
    950: '#000000',
  },
}

SCSS

$custom: #397fd3;
$custom-light: #83a3e1;
$custom-dark: #000000;

JSON

{
  "hex": "#397fd3",
  "rgb": {
    "r": 57,
    "g": 127,
    "b": 211
  },
  "hsl": {
    "h": 212.727,
    "s": 63.636,
    "l": 52.549
  },
  "oklch": {
    "l": 0.5934,
    "c": 0.14664,
    "h": 254.8
  },
  "luminance": 0.20752
}

Semantic roles & 50–950 ramp

primary

#397FD3

secondary

#D5B792

accent

#9B41E7

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #397FD3

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

Preview Lab → · Contrast checker → · Palette generator →