#2559A4#2559A4

#2559A4 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.0% C 0.133 H 258.0°. Best body text is #FFFFFF at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#2559A4
RGB	rgb(37, 89, 164)
HSL	hsl(215, 63%, 39%)
HSV	hsv(215, 77%, 64%)
CMYK	cmyk(77.4%, 45.7%, 0%, 35.7%)
CIE-LAB	lab(38.23, 10.16, -45.44)
CIE-LCH	lch(38.23, 46.56, 282.61°)
OKLab	oklab(47.05% -0.0276 -0.1303)
OKLCH	oklch(47.05% 0.133 258)
XYZ	xyz(11.0337, 10.2171, 36.5054)
Luminance	0.1022 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2559A4 #A47025

analogous

#2599A4 #2559A4 #3125A4

triadic

#2559A4 #A42559 #59A425

tetradic

#2559A4 #A42599 #A47025 #25A431

square

#2559A4 #A42599 #A47025 #25A431

split-complementary

#2559A4 #A43125 #99A425

monochromatic

#0E2340 #1A3E72 #2559A4 #3575D1 #6797DD

Accessibility & contrast

On white

6.90

#2559A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#2559A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2559A4

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2559A4	#FFFFFF	#000000	##FFFFFF
##2559A4	1.00	6.90	3.04	6.90
#FFFFFF	6.90	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3260A7

Deuteranopia (green-blind)

#1655A2

Tritanopia (blue-blind)

#006B76

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2559a4;
/* rgb */ color: rgb(37, 89, 164);
/* oklch */ color: oklch(47.0% 0.133 258.0);

Tailwind

colors: {
  custom: {
    50: '#7287bf',
    500: '#2559a4',
    950: '#000000',
  },
}

SCSS

$custom: #2559a4;
$custom-light: #7287bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2559a4",
  "rgb": {
    "r": 37,
    "g": 89,
    "b": 164
  },
  "hsl": {
    "h": 215.433,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.47049,
    "c": 0.13318,
    "h": 258
  },
  "luminance": 0.10218
}

Semantic roles & 50–950 ramp

primary

#2559A4

secondary

#C29B62

accent

#A342E6

background

#F7F8FB

surface

#EDEFF7

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2559A4

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

Preview Lab → · Contrast checker → · Palette generator →