#399ECC#399ECC

#399ECC is a light, moderate cyan. Relative luminance 0.297; OKLCH L 66.1% C 0.114 H 232.1°. Best body text is #000000 at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#399ECC
RGB	rgb(57, 158, 204)
HSL	hsl(199, 59%, 51%)
HSV	hsv(199, 72%, 80%)
CMYK	cmyk(72.1%, 22.5%, 0%, 20%)
CIE-LAB	lab(61.38, -13.98, -31.95)
CIE-LCH	lch(61.38, 34.87, 246.36°)
OKLab	oklab(66.09% -0.0699 -0.0898)
OKLCH	oklch(66.09% 0.114 232.1)
XYZ	xyz(24.8089, 29.6804, 61.5364)
Luminance	0.2968 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399ECC #CC6739

analogous

#39CCB1 #399ECC #3954CC

triadic

#399ECC #CC399E #9ECC39

tetradic

#399ECC #B139CC #CC6739 #54CC39

square

#399ECC #B139CC #CC6739 #54CC39

split-complementary

#399ECC #CC3954 #CCB139

monochromatic

#1C556E #297A9F #399ECC #6AB6D9 #9ACEE5

Accessibility & contrast

On white

3.03

#399ECC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.94

#399ECC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399ECC

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399ECC	#FFFFFF	#000000	##000000
##399ECC	1.00	3.03	6.94	6.94
#FFFFFF	3.03	1.00	21.00	21.00
#000000	6.94	21.00	1.00	1.00
##000000	6.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#879CCE

Deuteranopia (green-blind)

#738ECB

Tritanopia (blue-blind)

#00AAAD

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #399ecc;
/* rgb */ color: rgb(57, 158, 204);
/* oklch */ color: oklch(66.1% 0.114 232.1);

Tailwind

colors: {
  custom: {
    50: '#82badb',
    500: '#399ecc',
    950: '#000000',
  },
}

SCSS

$custom: #399ecc;
$custom-light: #82badb;
$custom-dark: #000000;

JSON

{
  "hex": "#399ecc",
  "rgb": {
    "r": 57,
    "g": 158,
    "b": 204
  },
  "hsl": {
    "h": 198.776,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.66094,
    "c": 0.11379,
    "h": 232.1
  },
  "luminance": 0.29683
}

Semantic roles & 50–950 ramp

primary

#399ECC

secondary

#D1A490

accent

#7746E2

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #399ECC

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

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