#399BB1#399BB1

#399BB1 is a light, moderate cyan. Relative luminance 0.275; OKLCH L 64.2% C 0.095 H 215.5°. Best body text is #000000 at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#399BB1
RGB	rgb(57, 155, 177)
HSL	hsl(191, 51%, 46%)
HSV	hsv(191, 68%, 69%)
CMYK	cmyk(67.8%, 12.4%, 0%, 30.6%)
CIE-LAB	lab(59.42, -21.19, -19.78)
CIE-LCH	lch(59.42, 28.99, 223.04°)
OKLab	oklab(64.18% -0.0771 -0.0551)
OKLCH	oklch(64.18% 0.095 215.5)
XYZ	xyz(21.3412, 27.4845, 45.7668)
Luminance	0.2749 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399BB1 #B14F39

analogous

#39B18B #399BB1 #395FB1

triadic

#399BB1 #B1399B #9BB139

tetradic

#399BB1 #8B39B1 #B14F39 #5FB139

square

#399BB1 #8B39B1 #B14F39 #5FB139

split-complementary

#399BB1 #B1395F #B18B39

monochromatic

#1B4A54 #2A7283 #399BB1 #5DB6CB #8BCBDA

Accessibility & contrast

On white

3.23

#399BB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.50

#399BB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399BB1

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399BB1	#FFFFFF	#000000	##000000
##399BB1	1.00	3.23	6.50	6.50
#FFFFFF	3.23	1.00	21.00	21.00
#000000	6.50	21.00	1.00	1.00
##000000	6.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C96B2

Deuteranopia (green-blind)

#7B8AB1

Tritanopia (blue-blind)

#00A3A2

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #399bb1;
/* rgb */ color: rgb(57, 155, 177);
/* oklch */ color: oklch(64.2% 0.095 215.5);

Tailwind

colors: {
  custom: {
    50: '#7eb8c8',
    500: '#399bb1',
    950: '#000000',
  },
}

SCSS

$custom: #399bb1;
$custom-light: #7eb8c8;
$custom-dark: #000000;

JSON

{
  "hex": "#399bb1",
  "rgb": {
    "r": 57,
    "g": 155,
    "b": 177
  },
  "hsl": {
    "h": 191,
    "s": 51.282,
    "l": 45.882
  },
  "oklch": {
    "l": 0.64178,
    "c": 0.09476,
    "h": 215.5
  },
  "luminance": 0.27487
}

Semantic roles & 50–950 ramp

primary

#399BB1

secondary

#C48E82

accent

#674DDB

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #399BB1

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

Preview Lab → · Contrast checker → · Palette generator →