#399CDB#399CDB

#399CDB is a light, vivid cyan. Relative luminance 0.298; OKLCH L 66.4% C 0.130 H 241.0°. Best body text is #000000 at 6.95:1 contrast (WCAG AA passes).

Color values

HEX	#399CDB
RGB	rgb(57, 156, 219)
HSL	hsl(203, 69%, 54%)
HSV	hsv(203, 74%, 86%)
CMYK	cmyk(74%, 28.8%, 0%, 14.1%)
CIE-LAB	lab(61.45, -7.76, -40.20)
CIE-LCH	lch(61.45, 40.94, 259.07°)
OKLab	oklab(66.36% -0.063 -0.1137)
OKLCH	oklch(66.36% 0.13 241)
XYZ	xyz(26.3570, 29.7582, 71.3589)
Luminance	0.2976 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399CDB #DB7839

analogous

#39DBC9 #399CDB #394BDB

triadic

#399CDB #DB399C #9CDB39

tetradic

#399CDB #C939DB #DB7839 #4BDB39

square

#399CDB #C939DB #DB7839 #4BDB39

split-complementary

#399CDB #DB394B #DBC939

monochromatic

#185982 #217CB6 #399CDB #6DB6E4 #A1D0EE

Accessibility & contrast

On white

3.02

#399CDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.95

#399CDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399CDB

6.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399CDB	#FFFFFF	#000000	##000000
##399CDB	1.00	3.02	6.95	6.95
#FFFFFF	3.02	1.00	21.00	21.00
#000000	6.95	21.00	1.00	1.00
##000000	6.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F9DDE

Deuteranopia (green-blind)

#688EDA

Tritanopia (blue-blind)

#00ACB2

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #399cdb;
/* rgb */ color: rgb(57, 156, 219);
/* oklch */ color: oklch(66.4% 0.130 241.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#399cdb",
  "rgb": {
    "r": 57,
    "g": 156,
    "b": 219
  },
  "hsl": {
    "h": 203.333,
    "s": 69.231,
    "l": 54.118
  },
  "oklch": {
    "l": 0.66364,
    "c": 0.12998,
    "h": 241
  },
  "luminance": 0.29761
}

Semantic roles & 50–950 ramp

primary

#399CDB

secondary

#DAB095

accent

#803CEC

background

#F8FBFE

surface

#F0F6FC

border

#CBD0D5

text

#0C1116

muted

#7D8084

Preview Lab

Preview with #399CDB

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

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