#397DB3#397DB3

#397DB3 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.0% C 0.108 H 245.4°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#397DB3
RGB	rgb(57, 125, 179)
HSL	hsl(207, 52%, 46%)
HSV	hsv(207, 68%, 70%)
CMYK	cmyk(68.2%, 30.2%, 0%, 29.8%)
CIE-LAB	lab(50.44, -3.82, -34.82)
CIE-LCH	lch(50.44, 35.03, 263.74°)
OKLab	oklab(57.05% -0.0451 -0.0984)
OKLCH	oklch(57.05% 0.108 245.4)
XYZ	xyz(17.1546, 18.7900, 45.3618)
Luminance	0.1879 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397DB3 #B36F39

analogous

#39B3AC #397DB3 #3940B3

triadic

#397DB3 #B3397D #7DB339

tetradic

#397DB3 #AC39B3 #B36F39 #40B339

square

#397DB3 #AC39B3 #B36F39 #40B339

split-complementary

#397DB3 #B33940 #B3AC39

monochromatic

#1B3C56 #2A5D85 #397DB3 #5E9BCC #8CB8DA

Accessibility & contrast

On white

4.41

#397DB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#397DB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397DB3

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397DB3	#FFFFFF	#000000	##000000
##397DB3	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657FB5

Deuteranopia (green-blind)

#5473B2

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #397db3;
/* rgb */ color: rgb(57, 125, 179);
/* oklch */ color: oklch(57.0% 0.108 245.4);

Tailwind

colors: {
  custom: {
    50: '#7da2ca',
    500: '#397db3',
    950: '#000000',
  },
}

SCSS

$custom: #397db3;
$custom-light: #7da2ca;
$custom-dark: #000000;

JSON

{
  "hex": "#397db3",
  "rgb": {
    "r": 57,
    "g": 125,
    "b": 179
  },
  "hsl": {
    "h": 206.557,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.5705,
    "c": 0.10825,
    "h": 245.4
  },
  "luminance": 0.18792
}

Semantic roles & 50–950 ramp

primary

#397DB3

secondary

#C5A083

accent

#8C4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #397DB3

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

Preview Lab → · Contrast checker → · Palette generator →