#399BB2#399BB2

#399BB2 is a light, moderate cyan. Relative luminance 0.275; OKLCH L 64.2% C 0.095 H 216.4°. Best body text is #000000 at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#399BB2
RGB	rgb(57, 155, 178)
HSL	hsl(191, 51%, 46%)
HSV	hsv(191, 68%, 70%)
CMYK	cmyk(68%, 12.9%, 0%, 30.2%)
CIE-LAB	lab(59.46, -20.87, -20.29)
CIE-LCH	lch(59.46, 29.11, 224.19°)
OKLab	oklab(64.22% -0.0767 -0.0565)
OKLCH	oklch(64.22% 0.095 216.4)
XYZ	xyz(21.4412, 27.5245, 46.2936)
Luminance	0.2753 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399BB2 #B25039

analogous

#39B28C #399BB2 #395EB2

triadic

#399BB2 #B2399B #9BB239

tetradic

#399BB2 #8C39B2 #B25039 #5EB239

square

#399BB2 #8C39B2 #B25039 #5EB239

split-complementary

#399BB2 #B2395E #B28C39

monochromatic

#1B4A55 #2A7384 #399BB2 #5DB6CB #8BCBDA

Accessibility & contrast

On white

3.23

#399BB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.51

#399BB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399BB2

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399BB2	#FFFFFF	#000000	##000000
##399BB2	1.00	3.23	6.51	6.51
#FFFFFF	3.23	1.00	21.00	21.00
#000000	6.51	21.00	1.00	1.00
##000000	6.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8B96B3

Deuteranopia (green-blind)

#7A8AB2

Tritanopia (blue-blind)

#00A3A2

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #399bb2;
/* rgb */ color: rgb(57, 155, 178);
/* oklch */ color: oklch(64.2% 0.095 216.4);

Tailwind

colors: {
  custom: {
    50: '#7eb8c9',
    500: '#399bb2',
    950: '#000000',
  },
}

SCSS

$custom: #399bb2;
$custom-light: #7eb8c9;
$custom-dark: #000000;

JSON

{
  "hex": "#399bb2",
  "rgb": {
    "r": 57,
    "g": 155,
    "b": 178
  },
  "hsl": {
    "h": 191.405,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.6422,
    "c": 0.09527,
    "h": 216.4
  },
  "luminance": 0.27527
}

Semantic roles & 50–950 ramp

primary

#399BB2

secondary

#C48F82

accent

#684DDB

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #399BB2

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

Preview Lab → · Contrast checker → · Palette generator →