#2558A4#2558A4

#2558A4 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 46.8% C 0.134 H 258.5°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#2558A4
RGB	rgb(37, 88, 164)
HSL	hsl(216, 63%, 39%)
HSV	hsv(216, 77%, 64%)
CMYK	cmyk(77.4%, 46.3%, 0%, 35.7%)
CIE-LAB	lab(37.94, 10.82, -45.91)
CIE-LCH	lch(37.94, 47.17, 283.26°)
OKLab	oklab(46.82% -0.0268 -0.1317)
OKLCH	oklch(46.82% 0.134 258.5)
XYZ	xyz(10.9511, 10.0518, 36.4778)
Luminance	0.1005 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2558A4 #A47125

analogous

#2597A4 #2558A4 #3225A4

triadic

#2558A4 #A42558 #58A425

tetradic

#2558A4 #A42597 #A47125 #25A432

square

#2558A4 #A42597 #A47125 #25A432

split-complementary

#2558A4 #A43225 #97A425

monochromatic

#0E2240 #1A3D72 #2558A4 #3574D1 #6796DD

Accessibility & contrast

On white

6.98

#2558A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#2558A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2558A4

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2558A4	#FFFFFF	#000000	##FFFFFF
##2558A4	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#305FA7

Deuteranopia (green-blind)

#1254A2

Tritanopia (blue-blind)

#006A76

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2558a4;
/* rgb */ color: rgb(37, 88, 164);
/* oklch */ color: oklch(46.8% 0.134 258.5);

Tailwind

colors: {
  custom: {
    50: '#7386bf',
    500: '#2558a4',
    950: '#000000',
  },
}

SCSS

$custom: #2558a4;
$custom-light: #7386bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2558a4",
  "rgb": {
    "r": 37,
    "g": 88,
    "b": 164
  },
  "hsl": {
    "h": 215.906,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.46822,
    "c": 0.13438,
    "h": 258.5
  },
  "luminance": 0.10053
}

Semantic roles & 50–950 ramp

primary

#2558A4

secondary

#C29C62

accent

#A442E6

background

#F7F8FB

surface

#EDEFF7

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2558A4

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

Preview Lab → · Contrast checker → · Palette generator →