#2558AB#2558AB

#2558AB is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.3% C 0.144 H 259.8°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#2558AB
RGB	rgb(37, 88, 171)
HSL	hsl(217, 64%, 41%)
HSV	hsv(217, 78%, 67%)
CMYK	cmyk(78.4%, 48.5%, 0%, 32.9%)
CIE-LAB	lab(38.40, 13.55, -49.33)
CIE-LCH	lch(38.40, 51.16, 285.36°)
OKLab	oklab(47.33% -0.0256 -0.1417)
OKLCH	oklch(47.33% 0.144 259.8)
XYZ	xyz(11.6007, 10.3117, 39.8991)
Luminance	0.1031 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2558AB #AB7825

analogous

#259BAB #2558AB #3525AB

triadic

#2558AB #AB2558 #58AB25

tetradic

#2558AB #AB259B #AB7825 #25AB35

square

#2558AB #AB259B #AB7825 #25AB35

split-complementary

#2558AB #AB3525 #9BAB25

monochromatic

#0F2446 #1A3E79 #2558AB #3974D4 #6B97DF

Accessibility & contrast

On white

6.86

#2558AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#2558AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2558AB

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2558AB	#FFFFFF	#000000	##FFFFFF
##2558AB	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2961AE

Deuteranopia (green-blind)

#0055A9

Tritanopia (blue-blind)

#006C79

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2558ab;
/* rgb */ color: rgb(37, 88, 171);
/* oklch */ color: oklch(47.3% 0.144 259.8);

Tailwind

colors: {
  custom: {
    50: '#7486c4',
    500: '#2558ab',
    950: '#000000',
  },
}

SCSS

$custom: #2558ab;
$custom-light: #7486c4;
$custom-dark: #000000;

JSON

{
  "hex": "#2558ab",
  "rgb": {
    "r": 37,
    "g": 88,
    "b": 171
  },
  "hsl": {
    "h": 217.164,
    "s": 64.423,
    "l": 40.784
  },
  "oklch": {
    "l": 0.47325,
    "c": 0.14404,
    "h": 259.8
  },
  "luminance": 0.10313
}

Semantic roles & 50–950 ramp

primary

#2558AB

secondary

#C5A167

accent

#A840E7

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #2558AB

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

Preview Lab → · Contrast checker → · Palette generator →