#2558A5#2558A5

#2558A5 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 46.9% C 0.136 H 258.7°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#2558A5
RGB	rgb(37, 88, 165)
HSL	hsl(216, 63%, 40%)
HSV	hsv(216, 78%, 65%)
CMYK	cmyk(77.6%, 46.7%, 0%, 35.3%)
CIE-LAB	lab(38.00, 11.21, -46.41)
CIE-LCH	lch(38.00, 47.74, 283.58°)
OKLab	oklab(46.89% -0.0266 -0.1331)
OKLCH	oklch(46.89% 0.136 258.7)
XYZ	xyz(11.0417, 10.0881, 36.9553)
Luminance	0.1009 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2558A5 #A57225

analogous

#2598A5 #2558A5 #3225A5

triadic

#2558A5 #A52558 #58A525

tetradic

#2558A5 #A52598 #A57225 #25A532

square

#2558A5 #A52598 #A57225 #25A532

split-complementary

#2558A5 #A53225 #98A525

monochromatic

#0F2341 #1A3D73 #2558A5 #3574D2 #6796DD

Accessibility & contrast

On white

6.96

#2558A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#2558A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2558A5

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2558A5	#FFFFFF	#000000	##FFFFFF
##2558A5	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F60A8

Deuteranopia (green-blind)

#1054A3

Tritanopia (blue-blind)

#006A76

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2558a5;
/* rgb */ color: rgb(37, 88, 165);
/* oklch */ color: oklch(46.9% 0.136 258.7);

Tailwind

colors: {
  custom: {
    50: '#7386c0',
    500: '#2558a5',
    950: '#000000',
  },
}

SCSS

$custom: #2558a5;
$custom-light: #7386c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2558a5",
  "rgb": {
    "r": 37,
    "g": 88,
    "b": 165
  },
  "hsl": {
    "h": 216.094,
    "s": 63.366,
    "l": 39.608
  },
  "oklch": {
    "l": 0.46893,
    "c": 0.13577,
    "h": 258.7
  },
  "luminance": 0.10089
}

Semantic roles & 50–950 ramp

primary

#2558A5

secondary

#C39D63

accent

#A541E6

background

#F7F8FB

surface

#EDEFF7

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2558A5

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

Preview Lab → · Contrast checker → · Palette generator →