#2559A9#2559A9

#2559A9 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.4% C 0.140 H 259.0°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#2559A9
RGB	rgb(37, 89, 169)
HSL	hsl(216, 64%, 40%)
HSV	hsv(216, 78%, 66%)
CMYK	cmyk(78.1%, 47.3%, 0%, 33.7%)
CIE-LAB	lab(38.55, 12.11, -47.89)
CIE-LCH	lch(38.55, 49.40, 284.19°)
OKLab	oklab(47.4% -0.0267 -0.1375)
OKLCH	oklch(47.4% 0.14 259)
XYZ	xyz(11.4941, 10.4013, 38.9303)
Luminance	0.1040 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2559A9 #A97525

analogous

#259BA9 #2559A9 #3325A9

triadic

#2559A9 #A92559 #59A925

tetradic

#2559A9 #A9259B #A97525 #25A933

square

#2559A9 #A9259B #A97525 #25A933

split-complementary

#2559A9 #A93325 #9BA925

monochromatic

#0F2445 #1A3F77 #2559A9 #3875D3 #6A98DE

Accessibility & contrast

On white

6.82

#2559A9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#2559A9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2559A9

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2559A9	#FFFFFF	#000000	##FFFFFF
##2559A9	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D61AC

Deuteranopia (green-blind)

#0855A7

Tritanopia (blue-blind)

#006C79

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2559a9;
/* rgb */ color: rgb(37, 89, 169);
/* oklch */ color: oklch(47.4% 0.140 259.0);

Tailwind

colors: {
  custom: {
    50: '#7487c3',
    500: '#2559a9',
    950: '#000000',
  },
}

SCSS

$custom: #2559a9;
$custom-light: #7487c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2559a9",
  "rgb": {
    "r": 37,
    "g": 89,
    "b": 169
  },
  "hsl": {
    "h": 216.364,
    "s": 64.078,
    "l": 40.392
  },
  "oklch": {
    "l": 0.47403,
    "c": 0.14007,
    "h": 259
  },
  "luminance": 0.10403
}

Semantic roles & 50–950 ramp

primary

#2559A9

secondary

#C49F65

accent

#A641E7

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2559A9

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

Preview Lab → · Contrast checker → · Palette generator →