#399EB5#399EB5

#399EB5 is a light, moderate cyan. Relative luminance 0.287; OKLCH L 65.1% C 0.097 H 215.9°. Best body text is #000000 at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#399EB5
RGB	rgb(57, 158, 181)
HSL	hsl(191, 52%, 47%)
HSV	hsv(191, 69%, 71%)
CMYK	cmyk(68.5%, 12.7%, 0%, 29%)
CIE-LAB	lab(60.48, -21.49, -20.43)
CIE-LCH	lch(60.48, 29.65, 223.55°)
OKLab	oklab(65.08% -0.0786 -0.0569)
OKLCH	oklch(65.08% 0.097 215.9)
XYZ	xyz(22.2512, 28.6573, 48.0658)
Luminance	0.2866 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399EB5 #B55039

analogous

#39B58E #399EB5 #3960B5

triadic

#399EB5 #B5399E #9EB539

tetradic

#399EB5 #8E39B5 #B55039 #60B539

square

#399EB5 #8E39B5 #B55039 #60B539

split-complementary

#399EB5 #B53960 #B58E39

monochromatic

#1C4D58 #2A7586 #399EB5 #5FB8CD #8DCDDB

Accessibility & contrast

On white

3.12

#399EB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.73

#399EB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399EB5

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399EB5	#FFFFFF	#000000	##000000
##399EB5	1.00	3.12	6.73	6.73
#FFFFFF	3.12	1.00	21.00	21.00
#000000	6.73	21.00	1.00	1.00
##000000	6.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8E99B6

Deuteranopia (green-blind)

#7D8CB5

Tritanopia (blue-blind)

#00A6A5

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #399eb5;
/* rgb */ color: rgb(57, 158, 181);
/* oklch */ color: oklch(65.1% 0.097 215.9);

Tailwind

colors: {
  custom: {
    50: '#7fbbcb',
    500: '#399eb5',
    950: '#000000',
  },
}

SCSS

$custom: #399eb5;
$custom-light: #7fbbcb;
$custom-dark: #000000;

JSON

{
  "hex": "#399eb5",
  "rgb": {
    "r": 57,
    "g": 158,
    "b": 181
  },
  "hsl": {
    "h": 191.129,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.65077,
    "c": 0.09704,
    "h": 215.9
  },
  "luminance": 0.2866
}

Semantic roles & 50–950 ramp

primary

#399EB5

secondary

#C69084

accent

#674CDC

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #399EB5

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

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