#2558A8#2558A8

#2558A8 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.1% C 0.140 H 259.3°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#2558A8
RGB	rgb(37, 88, 168)
HSL	hsl(217, 64%, 40%)
HSV	hsv(217, 78%, 66%)
CMYK	cmyk(78%, 47.6%, 0%, 34.1%)
CIE-LAB	lab(38.20, 12.38, -47.87)
CIE-LCH	lch(38.20, 49.45, 284.50°)
OKLab	oklab(47.11% -0.0261 -0.1375)
OKLCH	oklch(47.11% 0.14 259.3)
XYZ	xyz(11.3180, 10.1986, 38.4102)
Luminance	0.1020 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2558A8 #A87525

analogous

#2599A8 #2558A8 #3325A8

triadic

#2558A8 #A82558 #58A825

tetradic

#2558A8 #A82599 #A87525 #25A833

square

#2558A8 #A82599 #A87525 #25A833

split-complementary

#2558A8 #A83325 #99A825

monochromatic

#0F2344 #1A3E76 #2558A8 #3774D3 #6997DE

Accessibility & contrast

On white

6.91

#2558A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#2558A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2558A8

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2558A8	#FFFFFF	#000000	##FFFFFF
##2558A8	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C60AB

Deuteranopia (green-blind)

#0554A6

Tritanopia (blue-blind)

#006B78

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2558a8;
/* rgb */ color: rgb(37, 88, 168);
/* oklch */ color: oklch(47.1% 0.140 259.3);

Tailwind

colors: {
  custom: {
    50: '#7386c2',
    500: '#2558a8',
    950: '#000000',
  },
}

SCSS

$custom: #2558a8;
$custom-light: #7386c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2558a8",
  "rgb": {
    "r": 37,
    "g": 88,
    "b": 168
  },
  "hsl": {
    "h": 216.641,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.47108,
    "c": 0.13991,
    "h": 259.3
  },
  "luminance": 0.102
}

Semantic roles & 50–950 ramp

primary

#2558A8

secondary

#C49F65

accent

#A641E7

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2558A8

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

Preview Lab → · Contrast checker → · Palette generator →