#397BBB#397BBB

#397BBB is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 57.0% C 0.120 H 250.1°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#397BBB
RGB	rgb(57, 123, 187)
HSL	hsl(210, 53%, 48%)
HSV	hsv(210, 70%, 73%)
CMYK	cmyk(69.5%, 34.2%, 0%, 26.7%)
CIE-LAB	lab(50.24, 0.20, -39.74)
CIE-LCH	lch(50.24, 39.74, 270.29°)
OKLab	oklab(57.02% -0.0407 -0.1128)
OKLCH	oklch(57.02% 0.12 250.1)
XYZ	xyz(17.7366, 18.6217, 49.6637)
Luminance	0.1862 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397BBB #BB7939

analogous

#39BBBA #397BBB #393ABB

triadic

#397BBB #BB397B #7BBB39

tetradic

#397BBB #BA39BB #BB7939 #3ABB39

square

#397BBB #BA39BB #BB7939 #3ABB39

split-complementary

#397BBB #BB393A #BBBA39

monochromatic

#1C3D5D #2B5C8C #397BBB #6299CF #91B8DD

Accessibility & contrast

On white

4.44

#397BBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#397BBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397BBB

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397BBB	#FFFFFF	#000000	##000000
##397BBB	1.00	4.44	4.72	4.72
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7EBE

Deuteranopia (green-blind)

#4C72BA

Tritanopia (blue-blind)

#008A92

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #397bbb;
/* rgb */ color: rgb(57, 123, 187);
/* oklch */ color: oklch(57.0% 0.120 250.1);

Tailwind

colors: {
  custom: {
    50: '#7ea0d0',
    500: '#397bbb',
    950: '#000000',
  },
}

SCSS

$custom: #397bbb;
$custom-light: #7ea0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#397bbb",
  "rgb": {
    "r": 57,
    "g": 123,
    "b": 187
  },
  "hsl": {
    "h": 209.538,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57023,
    "c": 0.1199,
    "h": 250.1
  },
  "luminance": 0.18624
}

Semantic roles & 50–950 ramp

primary

#397BBB

secondary

#C8A787

accent

#934BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #397BBB

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

Preview Lab → · Contrast checker → · Palette generator →