#397FBB#397FBB

#397FBB is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 58.0% C 0.116 H 247.4°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#397FBB
RGB	rgb(57, 127, 187)
HSL	hsl(208, 53%, 48%)
HSV	hsv(208, 70%, 73%)
CMYK	cmyk(69.5%, 32.1%, 0%, 26.7%)
CIE-LAB	lab(51.42, -2.19, -37.88)
CIE-LCH	lch(51.42, 37.95, 266.69°)
OKLab	oklab(57.95% -0.0447 -0.1073)
OKLCH	oklch(57.95% 0.116 247.4)
XYZ	xyz(18.2430, 19.6345, 49.8325)
Luminance	0.1964 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397FBB #BB7539

analogous

#39BBB6 #397FBB #393EBB

triadic

#397FBB #BB397F #7FBB39

tetradic

#397FBB #B639BB #BB7539 #3EBB39

square

#397FBB #B639BB #BB7539 #3EBB39

split-complementary

#397FBB #BB393E #BBB639

monochromatic

#1C3F5D #2B5F8C #397FBB #629DCF #91BADD

Accessibility & contrast

On white

4.26

#397FBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#397FBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397FBB

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397FBB	#FFFFFF	#000000	##000000
##397FBB	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6481BE

Deuteranopia (green-blind)

#5275BA

Tritanopia (blue-blind)

#008D94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #397fbb;
/* rgb */ color: rgb(57, 127, 187);
/* oklch */ color: oklch(58.0% 0.116 247.4);

Tailwind

colors: {
  custom: {
    50: '#7ea3cf',
    500: '#397fbb',
    950: '#000000',
  },
}

SCSS

$custom: #397fbb;
$custom-light: #7ea3cf;
$custom-dark: #000000;

JSON

{
  "hex": "#397fbb",
  "rgb": {
    "r": 57,
    "g": 127,
    "b": 187
  },
  "hsl": {
    "h": 207.692,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.5795,
    "c": 0.11624,
    "h": 247.4
  },
  "luminance": 0.19636
}

Semantic roles & 50–950 ramp

primary

#397FBB

secondary

#C8A587

accent

#8E4BDD

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #397FBB

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

Preview Lab → · Contrast checker → · Palette generator →