#399BB0#399BB0

#399BB0 is a light, moderate cyan. Relative luminance 0.274; OKLCH L 64.1% C 0.094 H 214.7°. Best body text is #000000 at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#399BB0
RGB	rgb(57, 155, 176)
HSL	hsl(191, 51%, 46%)
HSV	hsv(191, 68%, 69%)
CMYK	cmyk(67.6%, 11.9%, 0%, 31%)
CIE-LAB	lab(59.38, -21.50, -19.27)
CIE-LCH	lch(59.38, 28.87, 221.87°)
OKLab	oklab(64.14% -0.0775 -0.0536)
OKLCH	oklch(64.14% 0.094 214.7)
XYZ	xyz(21.2419, 27.4448, 45.2438)
Luminance	0.2745 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399BB0 #B04E39

analogous

#39B089 #399BB0 #395FB0

triadic

#399BB0 #B0399B #9BB039

tetradic

#399BB0 #8939B0 #B04E39 #5FB039

square

#399BB0 #8939B0 #B04E39 #5FB039

split-complementary

#399BB0 #B0395F #B08939

monochromatic

#1B4A54 #2A7282 #399BB0 #5CB7CA #8ACBD9

Accessibility & contrast

On white

3.24

#399BB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.49

#399BB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399BB0

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399BB0	#FFFFFF	#000000	##000000
##399BB0	1.00	3.24	6.49	6.49
#FFFFFF	3.24	1.00	21.00	21.00
#000000	6.49	21.00	1.00	1.00
##000000	6.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C96B1

Deuteranopia (green-blind)

#7B8AB0

Tritanopia (blue-blind)

#00A3A1

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #399bb0;
/* rgb */ color: rgb(57, 155, 176);
/* oklch */ color: oklch(64.1% 0.094 214.7);

Tailwind

colors: {
  custom: {
    50: '#7eb8c7',
    500: '#399bb0',
    950: '#000000',
  },
}

SCSS

$custom: #399bb0;
$custom-light: #7eb8c7;
$custom-dark: #000000;

JSON

{
  "hex": "#399bb0",
  "rgb": {
    "r": 57,
    "g": 155,
    "b": 176
  },
  "hsl": {
    "h": 190.588,
    "s": 51.073,
    "l": 45.686
  },
  "oklch": {
    "l": 0.64137,
    "c": 0.09426,
    "h": 214.7
  },
  "luminance": 0.27447
}

Semantic roles & 50–950 ramp

primary

#399BB0

secondary

#C48D81

accent

#664DDB

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #399BB0

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

Preview Lab → · Contrast checker → · Palette generator →