#397DB2#397DB2

#397DB2 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.0% C 0.107 H 244.9°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#397DB2
RGB	rgb(57, 125, 178)
HSL	hsl(206, 51%, 46%)
HSV	hsv(206, 68%, 70%)
CMYK	cmyk(68%, 29.8%, 0%, 30.2%)
CIE-LAB	lab(50.39, -4.17, -34.32)
CIE-LCH	lch(50.39, 34.57, 263.08°)
OKLab	oklab(57% -0.0454 -0.0969)
OKLCH	oklch(57% 0.107 244.9)
XYZ	xyz(17.0538, 18.7496, 44.8311)
Luminance	0.1875 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397DB2 #B26E39

analogous

#39B2AA #397DB2 #3940B2

triadic

#397DB2 #B2397D #7DB239

tetradic

#397DB2 #AA39B2 #B26E39 #40B239

square

#397DB2 #AA39B2 #B26E39 #40B239

split-complementary

#397DB2 #B23940 #B2AA39

monochromatic

#1B3C55 #2A5C84 #397DB2 #5D9BCB #8BB8DA

Accessibility & contrast

On white

4.42

#397DB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#397DB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397DB2

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397DB2	#FFFFFF	#000000	##000000
##397DB2	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB4

Deuteranopia (green-blind)

#5573B1

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #397db2;
/* rgb */ color: rgb(57, 125, 178);
/* oklch */ color: oklch(57.0% 0.107 244.9);

Tailwind

colors: {
  custom: {
    50: '#7da2c9',
    500: '#397db2',
    950: '#000000',
  },
}

SCSS

$custom: #397db2;
$custom-light: #7da2c9;
$custom-dark: #000000;

JSON

{
  "hex": "#397db2",
  "rgb": {
    "r": 57,
    "g": 125,
    "b": 178
  },
  "hsl": {
    "h": 206.281,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.56997,
    "c": 0.10705,
    "h": 244.9
  },
  "luminance": 0.18751
}

Semantic roles & 50–950 ramp

primary

#397DB2

secondary

#C49F82

accent

#8B4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #397DB2

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

Preview Lab → · Contrast checker → · Palette generator →