#399EDB#399EDB

#399EDB is a light, vivid cyan. Relative luminance 0.304; OKLCH L 66.8% C 0.129 H 239.7°. Best body text is #000000 at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#399EDB
RGB	rgb(57, 158, 219)
HSL	hsl(203, 69%, 54%)
HSV	hsv(203, 74%, 86%)
CMYK	cmyk(74%, 27.9%, 0%, 14.1%)
CIE-LAB	lab(62.03, -8.88, -39.28)
CIE-LCH	lch(62.03, 40.28, 257.26°)
OKLab	oklab(66.83% -0.0649 -0.111)
OKLCH	oklch(66.83% 0.129 239.7)
XYZ	xyz(26.6954, 30.4349, 71.4717)
Luminance	0.3044 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399EDB #DB7639

analogous

#39DBC7 #399EDB #394DDB

triadic

#399EDB #DB399E #9EDB39

tetradic

#399EDB #C739DB #DB7639 #4DDB39

square

#399EDB #C739DB #DB7639 #4DDB39

split-complementary

#399EDB #DB394D #DBC739

monochromatic

#185A82 #217EB6 #399EDB #6DB7E4 #A1D1EE

Accessibility & contrast

On white

2.96

#399EDB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.09

#399EDB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #399EDB

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399EDB	#FFFFFF	#000000	##000000
##399EDB	1.00	2.96	7.09	7.09
#FFFFFF	2.96	1.00	21.00	21.00
#000000	7.09	21.00	1.00	1.00
##000000	7.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#819EDE

Deuteranopia (green-blind)

#6B8FDA

Tritanopia (blue-blind)

#00ADB3

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #399edb;
/* rgb */ color: rgb(57, 158, 219);
/* oklch */ color: oklch(66.8% 0.129 239.7);

Tailwind

colors: {
  custom: {
    50: '#85bae6',
    500: '#399edb',
    950: '#000000',
  },
}

SCSS

$custom: #399edb;
$custom-light: #85bae6;
$custom-dark: #000000;

JSON

{
  "hex": "#399edb",
  "rgb": {
    "r": 57,
    "g": 158,
    "b": 219
  },
  "hsl": {
    "h": 202.593,
    "s": 69.231,
    "l": 54.118
  },
  "oklch": {
    "l": 0.66826,
    "c": 0.12859,
    "h": 239.7
  },
  "luminance": 0.30438
}

Semantic roles & 50–950 ramp

primary

#399EDB

secondary

#DAAF95

accent

#7E3CEC

background

#F8FBFE

surface

#F0F6FC

border

#CBD0D5

text

#0C1116

muted

#7D8084

Preview Lab

Preview with #399EDB

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

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