#399DDB#399DDB

#399DDB is a light, vivid cyan. Relative luminance 0.301; OKLCH L 66.6% C 0.129 H 240.3°. Best body text is #000000 at 7.02:1 contrast (WCAG AA passes).

Color values

HEX	#399DDB
RGB	rgb(57, 157, 219)
HSL	hsl(203, 69%, 54%)
HSV	hsv(203, 74%, 86%)
CMYK	cmyk(74%, 28.3%, 0%, 14.1%)
CIE-LAB	lab(61.74, -8.32, -39.74)
CIE-LCH	lch(61.74, 40.60, 258.17°)
OKLab	oklab(66.6% -0.064 -0.1123)
OKLCH	oklch(66.6% 0.129 240.3)
XYZ	xyz(26.5255, 30.0952, 71.4151)
Luminance	0.3010 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399DDB #DB7739

analogous

#39DBC8 #399DDB #394CDB

triadic

#399DDB #DB399D #9DDB39

tetradic

#399DDB #C839DB #DB7739 #4CDB39

square

#399DDB #C839DB #DB7739 #4CDB39

split-complementary

#399DDB #DB394C #DBC839

monochromatic

#185982 #217DB6 #399DDB #6DB7E4 #A1D0EE

Accessibility & contrast

On white

2.99

#399DDB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.02

#399DDB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #399DDB

7.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399DDB	#FFFFFF	#000000	##000000
##399DDB	1.00	2.99	7.02	7.02
#FFFFFF	2.99	1.00	21.00	21.00
#000000	7.02	21.00	1.00	1.00
##000000	7.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#809EDE

Deuteranopia (green-blind)

#6A8EDA

Tritanopia (blue-blind)

#00ACB3

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #399ddb;
/* rgb */ color: rgb(57, 157, 219);
/* oklch */ color: oklch(66.6% 0.129 240.3);

Tailwind

colors: {
  custom: {
    50: '#84b9e6',
    500: '#399ddb',
    950: '#000000',
  },
}

SCSS

$custom: #399ddb;
$custom-light: #84b9e6;
$custom-dark: #000000;

JSON

{
  "hex": "#399ddb",
  "rgb": {
    "r": 57,
    "g": 157,
    "b": 219
  },
  "hsl": {
    "h": 202.963,
    "s": 69.231,
    "l": 54.118
  },
  "oklch": {
    "l": 0.66595,
    "c": 0.12928,
    "h": 240.3
  },
  "luminance": 0.30098
}

Semantic roles & 50–950 ramp

primary

#399DDB

secondary

#DAB095

accent

#7F3CEC

background

#F8FBFE

surface

#F0F6FC

border

#CBD0D5

text

#0C1116

muted

#7D8084

Preview Lab

Preview with #399DDB

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

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