#397EB5#397EB5

#397EB5 is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.4% C 0.110 H 245.5°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#397EB5
RGB	rgb(57, 126, 181)
HSL	hsl(207, 52%, 47%)
HSV	hsv(207, 69%, 71%)
CMYK	cmyk(68.5%, 30.4%, 0%, 29%)
CIE-LAB	lab(50.83, -3.71, -35.36)
CIE-LCH	lch(50.83, 35.55, 264.01°)
OKLab	oklab(57.39% -0.0455 -0.0999)
OKLCH	oklch(57.39% 0.11 245.5)
XYZ	xyz(17.4855, 19.1259, 46.4773)
Luminance	0.1913 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397EB5 #B57039

analogous

#39B5AE #397EB5 #3940B5

triadic

#397EB5 #B5397E #7EB539

tetradic

#397EB5 #AE39B5 #B57039 #40B539

square

#397EB5 #AE39B5 #B57039 #40B539

split-complementary

#397EB5 #B53940 #B5AE39

monochromatic

#1C3D58 #2A5E86 #397EB5 #5F9CCD #8DB9DB

Accessibility & contrast

On white

4.35

#397EB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#397EB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397EB5

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397EB5	#FFFFFF	#000000	##000000
##397EB5	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6580B7

Deuteranopia (green-blind)

#5474B4

Tritanopia (blue-blind)

#008B91

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #397eb5;
/* rgb */ color: rgb(57, 126, 181);
/* oklch */ color: oklch(57.4% 0.110 245.5);

Tailwind

colors: {
  custom: {
    50: '#7da3cb',
    500: '#397eb5',
    950: '#000000',
  },
}

SCSS

$custom: #397eb5;
$custom-light: #7da3cb;
$custom-dark: #000000;

JSON

{
  "hex": "#397eb5",
  "rgb": {
    "r": 57,
    "g": 126,
    "b": 181
  },
  "hsl": {
    "h": 206.613,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.57392,
    "c": 0.10983,
    "h": 245.5
  },
  "luminance": 0.19128
}

Semantic roles & 50–950 ramp

primary

#397EB5

secondary

#C6A184

accent

#8C4CDC

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #397EB5

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

Preview Lab → · Contrast checker → · Palette generator →