#399CDA#399CDA

#399CDA is a light, vivid cyan. Relative luminance 0.297; OKLCH L 66.3% C 0.129 H 240.6°. Best body text is #000000 at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#399CDA
RGB	rgb(57, 156, 218)
HSL	hsl(203, 69%, 54%)
HSV	hsv(203, 74%, 85%)
CMYK	cmyk(73.9%, 28.4%, 0%, 14.5%)
CIE-LAB	lab(61.40, -8.11, -39.71)
CIE-LCH	lch(61.40, 40.53, 258.46°)
OKLab	oklab(66.31% -0.0633 -0.1123)
OKLCH	oklch(66.31% 0.129 240.6)
XYZ	xyz(26.2258, 29.7057, 70.6677)
Luminance	0.2971 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399CDA #DA7739

analogous

#39DAC8 #399CDA #394CDA

triadic

#399CDA #DA399C #9CDA39

tetradic

#399CDA #C839DA #DA7739 #4CDA39

square

#399CDA #C839DA #DA7739 #4CDA39

split-complementary

#399CDA #DA394C #DAC839

monochromatic

#185881 #227CB4 #399CDA #6DB6E4 #A0D0ED

Accessibility & contrast

On white

3.03

#399CDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.94

#399CDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399CDA

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399CDA	#FFFFFF	#000000	##000000
##399CDA	1.00	3.03	6.94	6.94
#FFFFFF	3.03	1.00	21.00	21.00
#000000	6.94	21.00	1.00	1.00
##000000	6.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F9DDD

Deuteranopia (green-blind)

#698DD9

Tritanopia (blue-blind)

#00ABB2

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #399cda;
/* rgb */ color: rgb(57, 156, 218);
/* oklch */ color: oklch(66.3% 0.129 240.6);

Tailwind

colors: {
  custom: {
    50: '#84b9e5',
    500: '#399cda',
    950: '#000000',
  },
}

SCSS

$custom: #399cda;
$custom-light: #84b9e5;
$custom-dark: #000000;

JSON

{
  "hex": "#399cda",
  "rgb": {
    "r": 57,
    "g": 156,
    "b": 218
  },
  "hsl": {
    "h": 203.106,
    "s": 68.511,
    "l": 53.922
  },
  "oklch": {
    "l": 0.66313,
    "c": 0.12891,
    "h": 240.6
  },
  "luminance": 0.29709
}

Semantic roles & 50–950 ramp

primary

#399CDA

secondary

#DAB095

accent

#803CEB

background

#F8FBFE

surface

#F0F6FC

border

#CBD0D5

text

#0C1116

muted

#7D8084

Preview Lab

Preview with #399CDA

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

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