#2559AA#2559AA

#2559AA is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.5% C 0.141 H 259.2°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#2559AA
RGB	rgb(37, 89, 170)
HSL	hsl(217, 64%, 41%)
HSV	hsv(217, 78%, 67%)
CMYK	cmyk(78.2%, 47.6%, 0%, 33.3%)
CIE-LAB	lab(38.62, 12.50, -48.38)
CIE-LCH	lch(38.62, 49.97, 284.49°)
OKLab	oklab(47.48% -0.0265 -0.1389)
OKLCH	oklch(47.48% 0.141 259.2)
XYZ	xyz(11.5884, 10.4390, 39.4266)
Luminance	0.1044 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2559AA #AA7625

analogous

#259BAA #2559AA #3325AA

triadic

#2559AA #AA2559 #59AA25

tetradic

#2559AA #AA259B #AA7625 #25AA33

square

#2559AA #AA259B #AA7625 #25AA33

split-complementary

#2559AA #AA3325 #9BAA25

monochromatic

#0F2445 #1A3F78 #2559AA #3875D4 #6B98DF

Accessibility & contrast

On white

6.80

#2559AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#2559AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2559AA

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2559AA	#FFFFFF	#000000	##FFFFFF
##2559AA	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C61AD

Deuteranopia (green-blind)

#0455A8

Tritanopia (blue-blind)

#006C79

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2559aa;
/* rgb */ color: rgb(37, 89, 170);
/* oklch */ color: oklch(47.5% 0.141 259.2);

Tailwind

colors: {
  custom: {
    50: '#7487c4',
    500: '#2559aa',
    950: '#000000',
  },
}

SCSS

$custom: #2559aa;
$custom-light: #7487c4;
$custom-dark: #000000;

JSON

{
  "hex": "#2559aa",
  "rgb": {
    "r": 37,
    "g": 89,
    "b": 170
  },
  "hsl": {
    "h": 216.541,
    "s": 64.251,
    "l": 40.588
  },
  "oklch": {
    "l": 0.47475,
    "c": 0.14144,
    "h": 259.2
  },
  "luminance": 0.1044
}

Semantic roles & 50–950 ramp

primary

#2559AA

secondary

#C5A066

accent

#A641E7

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #2559AA

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

Preview Lab → · Contrast checker → · Palette generator →