#3559A8#3559A8

#3559A8 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.0% C 0.134 H 263.7°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#3559A8
RGB	rgb(53, 89, 168)
HSL	hsl(221, 52%, 43%)
HSV	hsv(221, 68%, 66%)
CMYK	cmyk(68.5%, 47%, 0%, 34.1%)
CIE-LAB	lab(39.12, 13.99, -46.36)
CIE-LCH	lch(39.12, 48.43, 286.79°)
OKLab	oklab(47.99% -0.0146 -0.1327)
OKLCH	oklch(47.99% 0.134 263.7)
XYZ	xyz(12.1060, 10.7276, 38.4708)
Luminance	0.1073 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3559A8 #A88435

analogous

#3592A8 #3559A8 #4A35A8

triadic

#3559A8 #A83559 #59A835

tetradic

#3559A8 #A83592 #A88435 #35A84A

square

#3559A8 #A83592 #A88435 #35A84A

split-complementary

#3559A8 #A84A35 #92A835

monochromatic

#18284B #264079 #3559A8 #5277C8 #809BD7

Accessibility & contrast

On white

6.68

#3559A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3559A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3559A8

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3559A8	#FFFFFF	#000000	##FFFFFF
##3559A8	1.00	6.68	3.15	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3162AB

Deuteranopia (green-blind)

#1957A6

Tritanopia (blue-blind)

#006B78

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3559a8;
/* rgb */ color: rgb(53, 89, 168);
/* oklch */ color: oklch(48.0% 0.134 263.7);

Tailwind

colors: {
  custom: {
    50: '#7987c2',
    500: '#3559a8',
    950: '#000000',
  },
}

SCSS

$custom: #3559a8;
$custom-light: #7987c2;
$custom-dark: #000000;

JSON

{
  "hex": "#3559a8",
  "rgb": {
    "r": 53,
    "g": 89,
    "b": 168
  },
  "hsl": {
    "h": 221.217,
    "s": 52.036,
    "l": 43.333
  },
  "oklch": {
    "l": 0.47991,
    "c": 0.13353,
    "h": 263.7
  },
  "luminance": 0.10729
}

Semantic roles & 50–950 ramp

primary

#3559A8

secondary

#C0AA78

accent

#AF4CDB

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #3559A8

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

Preview Lab → · Contrast checker → · Palette generator →