#399CCB#399CCB

#399CCB is a light, moderate cyan. Relative luminance 0.290; OKLCH L 65.6% C 0.114 H 233.1°. Best body text is #000000 at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#399CCB
RGB	rgb(57, 156, 203)
HSL	hsl(199, 58%, 51%)
HSV	hsv(199, 72%, 80%)
CMYK	cmyk(71.9%, 23.2%, 0%, 20.4%)
CIE-LAB	lab(60.74, -13.22, -32.37)
CIE-LCH	lch(60.74, 34.97, 247.78°)
OKLab	oklab(65.57% -0.0683 -0.091)
OKLCH	oklch(65.57% 0.114 233.1)
XYZ	xyz(24.3510, 28.9558, 60.7940)
Luminance	0.2896 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399CCB #CB6839

analogous

#39CBB1 #399CCB #3953CB

triadic

#399CCB #CB399C #9CCB39

tetradic

#399CCB #B139CB #CB6839 #53CB39

square

#399CCB #B139CB #CB6839 #53CB39

split-complementary

#399CCB #CB3953 #CBB139

monochromatic

#1D536D #29789D #399CCB #69B4D8 #9ACCE4

Accessibility & contrast

On white

3.09

#399CCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.79

#399CCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399CCB

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399CCB	#FFFFFF	#000000	##000000
##399CCB	1.00	3.09	6.79	6.79
#FFFFFF	3.09	1.00	21.00	21.00
#000000	6.79	21.00	1.00	1.00
##000000	6.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#859ACD

Deuteranopia (green-blind)

#718CCA

Tritanopia (blue-blind)

#00A9AC

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #399ccb;
/* rgb */ color: rgb(57, 156, 203);
/* oklch */ color: oklch(65.6% 0.114 233.1);

Tailwind

colors: {
  custom: {
    50: '#82b9db',
    500: '#399ccb',
    950: '#000000',
  },
}

SCSS

$custom: #399ccb;
$custom-light: #82b9db;
$custom-dark: #000000;

JSON

{
  "hex": "#399ccb",
  "rgb": {
    "r": 57,
    "g": 156,
    "b": 203
  },
  "hsl": {
    "h": 199.315,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.65574,
    "c": 0.11381,
    "h": 233.1
  },
  "luminance": 0.28959
}

Semantic roles & 50–950 ramp

primary

#399CCB

secondary

#D0A490

accent

#7846E2

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #399CCB

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

Preview Lab → · Contrast checker → · Palette generator →