#399BE2#399BE2

#399BE2 is a light, vivid cyan. Relative luminance 0.298; OKLCH L 66.5% C 0.139 H 244.3°. Best body text is #000000 at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#399BE2
RGB	rgb(57, 155, 226)
HSL	hsl(205, 74%, 55%)
HSV	hsv(205, 75%, 89%)
CMYK	cmyk(74.8%, 31.4%, 0%, 11.4%)
CIE-LAB	lab(61.48, -4.76, -44.02)
CIE-LCH	lch(61.48, 44.28, 263.83°)
OKLab	oklab(66.5% -0.06 -0.1248)
OKLCH	oklch(66.5% 0.139 244.3)
XYZ	xyz(27.1308, 29.8004, 76.2589)
Luminance	0.2980 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399BE2 #E28039

analogous

#39E2D4 #399BE2 #3946E2

triadic

#399BE2 #E2399B #9BE239

tetradic

#399BE2 #D439E2 #E28039 #46E239

square

#399BE2 #D439E2 #E28039 #46E239

split-complementary

#399BE2 #E23946 #E2D439

monochromatic

#155A8C #1C7CC1 #399BE2 #6EB6EA #A4D1F2

Accessibility & contrast

On white

3.02

#399BE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.96

#399BE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399BE2

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399BE2	#FFFFFF	#000000	##000000
##399BE2	1.00	3.02	6.96	6.96
#FFFFFF	3.02	1.00	21.00	21.00
#000000	6.96	21.00	1.00	1.00
##000000	6.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A9DE5

Deuteranopia (green-blind)

#638DE1

Tritanopia (blue-blind)

#00ACB4

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #399be2;
/* rgb */ color: rgb(57, 155, 226);
/* oklch */ color: oklch(66.5% 0.139 244.3);

Tailwind

colors: {
  custom: {
    50: '#86b8eb',
    500: '#399be2',
    950: '#000000',
  },
}

SCSS

$custom: #399be2;
$custom-light: #86b8eb;
$custom-dark: #000000;

JSON

{
  "hex": "#399be2",
  "rgb": {
    "r": 57,
    "g": 155,
    "b": 226
  },
  "hsl": {
    "h": 205.207,
    "s": 74.449,
    "l": 55.49
  },
  "oklch": {
    "l": 0.665,
    "c": 0.1385,
    "h": 244.3
  },
  "luminance": 0.29804
}

Semantic roles & 50–950 ramp

primary

#399BE2

secondary

#DFB698

accent

#8537F1

background

#F9FBFE

surface

#F1F6FD

border

#CBD0D5

text

#0D1116

muted

#7E8084

Preview Lab

Preview with #399BE2

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

Preview Lab → · Contrast checker → · Palette generator →