#2559AC#2559AC

#2559AC is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.6% C 0.144 H 259.5°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#2559AC
RGB	rgb(37, 89, 172)
HSL	hsl(217, 65%, 41%)
HSV	hsv(217, 78%, 67%)
CMYK	cmyk(78.5%, 48.3%, 0%, 32.5%)
CIE-LAB	lab(38.75, 13.28, -49.35)
CIE-LCH	lch(38.75, 51.11, 285.07°)
OKLab	oklab(47.62% -0.0262 -0.1418)
OKLCH	oklch(47.62% 0.144 259.5)
XYZ	xyz(11.7790, 10.5153, 40.4306)
Luminance	0.1052 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2559AC #AC7825

analogous

#259CAC #2559AC #3425AC

triadic

#2559AC #AC2559 #59AC25

tetradic

#2559AC #AC259C #AC7825 #25AC34

square

#2559AC #AC259C #AC7825 #25AC34

split-complementary

#2559AC #AC3425 #9CAC25

monochromatic

#0F2547 #1A3F7A #2559AC #3A75D5 #6C98DF

Accessibility & contrast

On white

6.77

#2559AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#2559AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2559AC

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2559AC	#FFFFFF	#000000	##FFFFFF
##2559AC	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A62AF

Deuteranopia (green-blind)

#0055AA

Tritanopia (blue-blind)

#006D7A

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2559ac;
/* rgb */ color: rgb(37, 89, 172);
/* oklch */ color: oklch(47.6% 0.144 259.5);

Tailwind

colors: {
  custom: {
    50: '#7487c5',
    500: '#2559ac',
    950: '#000000',
  },
}

SCSS

$custom: #2559ac;
$custom-light: #7487c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2559ac",
  "rgb": {
    "r": 37,
    "g": 89,
    "b": 172
  },
  "hsl": {
    "h": 216.889,
    "s": 64.593,
    "l": 40.98
  },
  "oklch": {
    "l": 0.4762,
    "c": 0.14419,
    "h": 259.5
  },
  "luminance": 0.10517
}

Semantic roles & 50–950 ramp

primary

#2559AC

secondary

#C6A167

accent

#A740E8

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2559AC

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

Preview Lab → · Contrast checker → · Palette generator →