#397AB3#397AB3

#397AB3 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.3% C 0.111 H 247.7°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#397AB3
RGB	rgb(57, 122, 179)
HSL	hsl(208, 52%, 46%)
HSV	hsv(208, 68%, 70%)
CMYK	cmyk(68.2%, 31.8%, 0%, 29.8%)
CIE-LAB	lab(49.55, -2.03, -36.22)
CIE-LCH	lch(49.55, 36.28, 266.79°)
OKLab	oklab(56.35% -0.042 -0.1025)
OKLCH	oklch(56.35% 0.111 247.7)
XYZ	xyz(16.7805, 18.0418, 45.2372)
Luminance	0.1804 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397AB3 #B37239

analogous

#39B3AF #397AB3 #393DB3

triadic

#397AB3 #B3397A #7AB339

tetradic

#397AB3 #AF39B3 #B37239 #3DB339

square

#397AB3 #AF39B3 #B37239 #3DB339

split-complementary

#397AB3 #B3393D #B3AF39

monochromatic

#1B3B56 #2A5A85 #397AB3 #5E98CC #8CB6DA

Accessibility & contrast

On white

4.56

#397AB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#397AB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397AB3

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397AB3	#FFFFFF	#000000	##000000
##397AB3	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617CB5

Deuteranopia (green-blind)

#5071B2

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #397ab3;
/* rgb */ color: rgb(57, 122, 179);
/* oklch */ color: oklch(56.3% 0.111 247.7);

Tailwind

colors: {
  custom: {
    50: '#7da0ca',
    500: '#397ab3',
    950: '#000000',
  },
}

SCSS

$custom: #397ab3;
$custom-light: #7da0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#397ab3",
  "rgb": {
    "r": 57,
    "g": 122,
    "b": 179
  },
  "hsl": {
    "h": 208.033,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.56346,
    "c": 0.1108,
    "h": 247.7
  },
  "luminance": 0.18044
}

Semantic roles & 50–950 ramp

primary

#397AB3

secondary

#C5A283

accent

#8F4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #397AB3

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

Preview Lab → · Contrast checker → · Palette generator →