#399ECB#399ECB

#399ECB is a light, moderate cyan. Relative luminance 0.296; OKLCH L 66.0% C 0.113 H 231.5°. Best body text is #000000 at 6.93:1 contrast (WCAG AA passes).

Color values

HEX	#399ECB
RGB	rgb(57, 158, 203)
HSL	hsl(198, 58%, 51%)
HSV	hsv(198, 72%, 80%)
CMYK	cmyk(71.9%, 22.2%, 0%, 20.4%)
CIE-LAB	lab(61.34, -14.32, -31.45)
CIE-LCH	lch(61.34, 34.56, 245.53°)
OKLab	oklab(66.05% -0.0703 -0.0884)
OKLCH	oklch(66.05% 0.113 231.5)
XYZ	xyz(24.6894, 29.6325, 60.9068)
Luminance	0.2964 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399ECB #CB6639

analogous

#39CBAF #399ECB #3955CB

triadic

#399ECB #CB399E #9ECB39

tetradic

#399ECB #AF39CB #CB6639 #55CB39

square

#399ECB #AF39CB #CB6639 #55CB39

split-complementary

#399ECB #CB3955 #CBAF39

monochromatic

#1D546D #297A9D #399ECB #69B6D8 #9ACDE4

Accessibility & contrast

On white

3.03

#399ECB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.93

#399ECB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399ECB

6.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399ECB	#FFFFFF	#000000	##000000
##399ECB	1.00	3.03	6.93	6.93
#FFFFFF	3.03	1.00	21.00	21.00
#000000	6.93	21.00	1.00	1.00
##000000	6.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#879CCD

Deuteranopia (green-blind)

#748ECA

Tritanopia (blue-blind)

#00AAAD

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #399ecb;
/* rgb */ color: rgb(57, 158, 203);
/* oklch */ color: oklch(66.0% 0.113 231.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#399ecb",
  "rgb": {
    "r": 57,
    "g": 158,
    "b": 203
  },
  "hsl": {
    "h": 198.493,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.66047,
    "c": 0.1129,
    "h": 231.5
  },
  "luminance": 0.29635
}

Semantic roles & 50–950 ramp

primary

#399ECB

secondary

#D0A390

accent

#7646E2

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #399ECB

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

Preview Lab → · Contrast checker → · Palette generator →