#397BB7#397BB7

#397BB7 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.8% C 0.115 H 248.6°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#397BB7
RGB	rgb(57, 123, 183)
HSL	hsl(209, 53%, 47%)
HSV	hsv(209, 69%, 72%)
CMYK	cmyk(68.9%, 32.8%, 0%, 28.2%)
CIE-LAB	lab(50.04, -1.22, -37.76)
CIE-LCH	lch(50.04, 37.78, 268.15°)
OKLab	oklab(56.8% -0.0419 -0.107)
OKLCH	oklch(56.8% 0.115 248.6)
XYZ	xyz(17.3143, 18.4528, 47.4398)
Luminance	0.1845 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397BB7 #B77539

analogous

#39B7B4 #397BB7 #393CB7

triadic

#397BB7 #B7397B #7BB739

tetradic

#397BB7 #B439B7 #B77539 #3CB739

square

#397BB7 #B439B7 #B77539 #3CB739

split-complementary

#397BB7 #B7393C #B7B439

monochromatic

#1C3C5A #2A5C88 #397BB7 #6099CD #8EB7DC

Accessibility & contrast

On white

4.48

#397BB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#397BB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397BB7

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397BB7	#FFFFFF	#000000	##000000
##397BB7	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#607EBA

Deuteranopia (green-blind)

#4F72B6

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397bb7;
/* rgb */ color: rgb(57, 123, 183);
/* oklch */ color: oklch(56.8% 0.115 248.6);

Tailwind

colors: {
  custom: {
    50: '#7ea0cd',
    500: '#397bb7',
    950: '#000000',
  },
}

SCSS

$custom: #397bb7;
$custom-light: #7ea0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#397bb7",
  "rgb": {
    "r": 57,
    "g": 123,
    "b": 183
  },
  "hsl": {
    "h": 208.571,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.56799,
    "c": 0.11487,
    "h": 248.6
  },
  "luminance": 0.18455
}

Semantic roles & 50–950 ramp

primary

#397BB7

secondary

#C7A485

accent

#904CDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #397BB7

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

Preview Lab → · Contrast checker → · Palette generator →