#399EB3#399EB3

#399EB3 is a light, moderate cyan. Relative luminance 0.286; OKLCH L 65.0% C 0.096 H 214.2°. Best body text is #000000 at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#399EB3
RGB	rgb(57, 158, 179)
HSL	hsl(190, 52%, 46%)
HSV	hsv(190, 68%, 70%)
CMYK	cmyk(68.2%, 11.7%, 0%, 29.8%)
CIE-LAB	lab(60.41, -22.12, -19.41)
CIE-LCH	lch(60.41, 29.43, 221.27°)
OKLab	oklab(64.99% -0.0794 -0.054)
OKLCH	oklch(64.99% 0.096 214.2)
XYZ	xyz(22.0475, 28.5758, 46.9928)
Luminance	0.2858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399EB3 #B34E39

analogous

#39B38B #399EB3 #3961B3

triadic

#399EB3 #B3399E #9EB339

tetradic

#399EB3 #8B39B3 #B34E39 #61B339

square

#399EB3 #8B39B3 #B34E39 #61B339

split-complementary

#399EB3 #B33961 #B38B39

monochromatic

#1B4C56 #2A7585 #399EB3 #5EB9CC #8CCDDA

Accessibility & contrast

On white

3.13

#399EB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.72

#399EB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399EB3

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399EB3	#FFFFFF	#000000	##000000
##399EB3	1.00	3.13	6.72	6.72
#FFFFFF	3.13	1.00	21.00	21.00
#000000	6.72	21.00	1.00	1.00
##000000	6.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F99B4

Deuteranopia (green-blind)

#7D8CB3

Tritanopia (blue-blind)

#00A6A4

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #399eb3;
/* rgb */ color: rgb(57, 158, 179);
/* oklch */ color: oklch(65.0% 0.096 214.2);

Tailwind

colors: {
  custom: {
    50: '#7fbbc9',
    500: '#399eb3',
    950: '#000000',
  },
}

SCSS

$custom: #399eb3;
$custom-light: #7fbbc9;
$custom-dark: #000000;

JSON

{
  "hex": "#399eb3",
  "rgb": {
    "r": 57,
    "g": 158,
    "b": 179
  },
  "hsl": {
    "h": 190.328,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.64994,
    "c": 0.09605,
    "h": 214.2
  },
  "luminance": 0.28578
}

Semantic roles & 50–950 ramp

primary

#399EB3

secondary

#C58E83

accent

#654DDB

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #399EB3

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

Preview Lab → · Contrast checker → · Palette generator →