#397BB9#397BB9

#397BB9 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.9% C 0.117 H 249.4°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#397BB9
RGB	rgb(57, 123, 185)
HSL	hsl(209, 53%, 47%)
HSV	hsv(209, 69%, 73%)
CMYK	cmyk(69.2%, 33.5%, 0%, 27.5%)
CIE-LAB	lab(50.14, -0.51, -38.75)
CIE-LCH	lch(50.14, 38.76, 269.24°)
OKLab	oklab(56.91% -0.0413 -0.1099)
OKLCH	oklch(56.91% 0.117 249.4)
XYZ	xyz(17.5240, 18.5367, 48.5439)
Luminance	0.1854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397BB9 #B97739

analogous

#39B9B7 #397BB9 #393BB9

triadic

#397BB9 #B9397B #7BB939

tetradic

#397BB9 #B739B9 #B97739 #3BB939

square

#397BB9 #B739B9 #B97739 #3BB939

split-complementary

#397BB9 #B9393B #B9B739

monochromatic

#1C3D5B #2B5C8A #397BB9 #6199CE #90B7DD

Accessibility & contrast

On white

4.46

#397BB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#397BB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397BB9

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397BB9	#FFFFFF	#000000	##000000
##397BB9	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7EBC

Deuteranopia (green-blind)

#4D72B8

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397bb9;
/* rgb */ color: rgb(57, 123, 185);
/* oklch */ color: oklch(56.9% 0.117 249.4);

Tailwind

colors: {
  custom: {
    50: '#7ea0ce',
    500: '#397bb9',
    950: '#000000',
  },
}

SCSS

$custom: #397bb9;
$custom-light: #7ea0ce;
$custom-dark: #000000;

JSON

{
  "hex": "#397bb9",
  "rgb": {
    "r": 57,
    "g": 123,
    "b": 185
  },
  "hsl": {
    "h": 209.063,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.56911,
    "c": 0.11737,
    "h": 249.4
  },
  "luminance": 0.18539
}

Semantic roles & 50–950 ramp

primary

#397BB9

secondary

#C8A686

accent

#924BDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #397BB9

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

Preview Lab → · Contrast checker → · Palette generator →