#399CE2#399CE2

#399CE2 is a light, vivid cyan. Relative luminance 0.301; OKLCH L 66.7% C 0.138 H 243.7°. Best body text is #000000 at 7.03:1 contrast (WCAG AA passes).

Color values

HEX	#399CE2
RGB	rgb(57, 156, 226)
HSL	hsl(205, 74%, 55%)
HSV	hsv(205, 75%, 89%)
CMYK	cmyk(74.8%, 31%, 0%, 11.4%)
CIE-LAB	lab(61.77, -5.33, -43.57)
CIE-LCH	lch(61.77, 43.89, 263.03°)
OKLab	oklab(66.73% -0.0609 -0.1235)
OKLCH	oklch(66.73% 0.138 243.7)
XYZ	xyz(27.2980, 30.1346, 76.3146)
Luminance	0.3014 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399CE2 #E27F39

analogous

#39E2D3 #399CE2 #3947E2

triadic

#399CE2 #E2399C #9CE239

tetradic

#399CE2 #D339E2 #E27F39 #47E239

square

#399CE2 #D339E2 #E27F39 #47E239

split-complementary

#399CE2 #E23947 #E2D339

monochromatic

#155B8C #1C7DC1 #399CE2 #6EB7EA #A4D1F2

Accessibility & contrast

On white

2.99

#399CE2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.03

#399CE2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #399CE2

7.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399CE2	#FFFFFF	#000000	##000000
##399CE2	1.00	2.99	7.03	7.03
#FFFFFF	2.99	1.00	21.00	21.00
#000000	7.03	21.00	1.00	1.00
##000000	7.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C9EE5

Deuteranopia (green-blind)

#648EE1

Tritanopia (blue-blind)

#00ADB5

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #399ce2;
/* rgb */ color: rgb(57, 156, 226);
/* oklch */ color: oklch(66.7% 0.138 243.7);

Tailwind

colors: {
  custom: {
    50: '#86b8eb',
    500: '#399ce2',
    950: '#000000',
  },
}

SCSS

$custom: #399ce2;
$custom-light: #86b8eb;
$custom-dark: #000000;

JSON

{
  "hex": "#399ce2",
  "rgb": {
    "r": 57,
    "g": 156,
    "b": 226
  },
  "hsl": {
    "h": 204.852,
    "s": 74.449,
    "l": 55.49
  },
  "oklch": {
    "l": 0.66728,
    "c": 0.1377,
    "h": 243.7
  },
  "luminance": 0.30138
}

Semantic roles & 50–950 ramp

primary

#399CE2

secondary

#DFB598

accent

#8437F1

background

#F9FBFE

surface

#F1F6FD

border

#CBD0D5

text

#0D1116

muted

#7E8084

Preview Lab

Preview with #399CE2

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

Preview Lab → · Contrast checker → · Palette generator →