#399FBB#399FBB

#399FBB is a light, moderate cyan. Relative luminance 0.293; OKLCH L 65.6% C 0.100 H 219.7°. Best body text is #000000 at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#399FBB
RGB	rgb(57, 159, 187)
HSL	hsl(193, 53%, 48%)
HSV	hsv(193, 70%, 73%)
CMYK	cmyk(69.5%, 15%, 0%, 26.7%)
CIE-LAB	lab(61.00, -20.10, -23.00)
CIE-LCH	lch(61.00, 30.54, 228.85°)
OKLab	oklab(65.57% -0.0773 -0.0642)
OKLCH	oklch(65.57% 0.1 219.7)
XYZ	xyz(23.0514, 29.2514, 51.4353)
Luminance	0.2925 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399FBB #BB5539

analogous

#39BB96 #399FBB #395EBB

triadic

#399FBB #BB399F #9FBB39

tetradic

#399FBB #9639BB #BB5539 #5EBB39

square

#399FBB #9639BB #BB5539 #5EBB39

split-complementary

#399FBB #BB395E #BB9639

monochromatic

#1C4F5D #2B778C #399FBB #62B8CF #91CDDD

Accessibility & contrast

On white

3.07

#399FBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.85

#399FBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399FBB

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399FBB	#FFFFFF	#000000	##000000
##399FBB	1.00	3.07	6.85	6.85
#FFFFFF	3.07	1.00	21.00	21.00
#000000	6.85	21.00	1.00	1.00
##000000	6.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8E9BBD

Deuteranopia (green-blind)

#7C8DBB

Tritanopia (blue-blind)

#00A8A8

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #399fbb;
/* rgb */ color: rgb(57, 159, 187);
/* oklch */ color: oklch(65.6% 0.100 219.7);

Tailwind

colors: {
  custom: {
    50: '#80bbcf',
    500: '#399fbb',
    950: '#000000',
  },
}

SCSS

$custom: #399fbb;
$custom-light: #80bbcf;
$custom-dark: #000000;

JSON

{
  "hex": "#399fbb",
  "rgb": {
    "r": 57,
    "g": 159,
    "b": 187
  },
  "hsl": {
    "h": 192.923,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.65572,
    "c": 0.10043,
    "h": 219.7
  },
  "luminance": 0.29254
}

Semantic roles & 50–950 ramp

primary

#399FBB

secondary

#C89587

accent

#6A4BDD

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0B1213

muted

#7C8182

Preview Lab

Preview with #399FBB

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

Preview Lab → · Contrast checker → · Palette generator →