#399EC9#399EC9

#399EC9 is a light, moderate cyan. Relative luminance 0.295; OKLCH L 66.0% C 0.111 H 230.3°. Best body text is #000000 at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#399EC9
RGB	rgb(57, 158, 201)
HSL	hsl(198, 57%, 51%)
HSV	hsv(198, 72%, 79%)
CMYK	cmyk(71.6%, 21.4%, 0%, 21.2%)
CIE-LAB	lab(61.25, -14.98, -30.46)
CIE-LCH	lch(61.25, 33.95, 243.81°)
OKLab	oklab(65.95% -0.071 -0.0855)
OKLCH	oklch(65.95% 0.111 230.3)
XYZ	xyz(24.4526, 29.5378, 59.6597)
Luminance	0.2954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399EC9 #C96439

analogous

#39C9AC #399EC9 #3956C9

triadic

#399EC9 #C9399E #9EC939

tetradic

#399EC9 #AC39C9 #C96439 #56C939

square

#399EC9 #AC39C9 #C96439 #56C939

split-complementary

#399EC9 #C93956 #C9AC39

monochromatic

#1D536B #2A799B #399EC9 #69B6D6 #99CDE3

Accessibility & contrast

On white

3.04

#399EC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.91

#399EC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399EC9

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399EC9	#FFFFFF	#000000	##000000
##399EC9	1.00	3.04	6.91	6.91
#FFFFFF	3.04	1.00	21.00	21.00
#000000	6.91	21.00	1.00	1.00
##000000	6.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#889CCB

Deuteranopia (green-blind)

#748EC8

Tritanopia (blue-blind)

#00AAAC

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #399ec9;
/* rgb */ color: rgb(57, 158, 201);
/* oklch */ color: oklch(66.0% 0.111 230.3);

Tailwind

colors: {
  custom: {
    50: '#82bad9',
    500: '#399ec9',
    950: '#000000',
  },
}

SCSS

$custom: #399ec9;
$custom-light: #82bad9;
$custom-dark: #000000;

JSON

{
  "hex": "#399ec9",
  "rgb": {
    "r": 57,
    "g": 158,
    "b": 201
  },
  "hsl": {
    "h": 197.917,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.65954,
    "c": 0.11114,
    "h": 230.3
  },
  "luminance": 0.29541
}

Semantic roles & 50–950 ramp

primary

#399EC9

secondary

#CFA28F

accent

#7547E0

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1114

muted

#7D8083

Preview Lab

Preview with #399EC9

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

Preview Lab → · Contrast checker → · Palette generator →