#399FCB#399FCB

#399FCB is a light, moderate cyan. Relative luminance 0.300; OKLCH L 66.3% C 0.112 H 230.7°. Best body text is #000000 at 7.00:1 contrast (WCAG AA passes).

Color values

HEX	#399FCB
RGB	rgb(57, 159, 203)
HSL	hsl(198, 58%, 51%)
HSV	hsv(198, 72%, 80%)
CMYK	cmyk(71.9%, 21.7%, 0%, 20.4%)
CIE-LAB	lab(61.63, -14.86, -30.99)
CIE-LCH	lch(61.63, 34.37, 244.38°)
OKLab	oklab(66.28% -0.0713 -0.087)
OKLCH	oklch(66.28% 0.112 230.7)
XYZ	xyz(24.8606, 29.9751, 60.9639)
Luminance	0.2998 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399FCB #CB6539

analogous

#39CBAE #399FCB #3956CB

triadic

#399FCB #CB399F #9FCB39

tetradic

#399FCB #AE39CB #CB6539 #56CB39

square

#399FCB #AE39CB #CB6539 #56CB39

split-complementary

#399FCB #CB3956 #CBAE39

monochromatic

#1D556D #297A9D #399FCB #69B7D8 #9ACEE4

Accessibility & contrast

On white

3.00

#399FCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

7.00

#399FCB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #399FCB

7.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399FCB	#FFFFFF	#000000	##000000
##399FCB	1.00	3.00	7.00	7.00
#FFFFFF	3.00	1.00	21.00	21.00
#000000	7.00	21.00	1.00	1.00
##000000	7.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#899DCD

Deuteranopia (green-blind)

#758FCA

Tritanopia (blue-blind)

#00ABAE

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #399fcb;
/* rgb */ color: rgb(57, 159, 203);
/* oklch */ color: oklch(66.3% 0.112 230.7);

Tailwind

colors: {
  custom: {
    50: '#82bbdb',
    500: '#399fcb',
    950: '#000000',
  },
}

SCSS

$custom: #399fcb;
$custom-light: #82bbdb;
$custom-dark: #000000;

JSON

{
  "hex": "#399fcb",
  "rgb": {
    "r": 57,
    "g": 159,
    "b": 203
  },
  "hsl": {
    "h": 198.082,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.66284,
    "c": 0.11248,
    "h": 230.7
  },
  "luminance": 0.29978
}

Semantic roles & 50–950 ramp

primary

#399FCB

secondary

#D0A390

accent

#7546E2

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #399FCB

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

Preview Lab → · Contrast checker → · Palette generator →