#2558AA#2558AA

#2558AA is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.3% C 0.143 H 259.6°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#2558AA
RGB	rgb(37, 88, 170)
HSL	hsl(217, 64%, 41%)
HSV	hsv(217, 78%, 67%)
CMYK	cmyk(78.2%, 48.2%, 0%, 33.3%)
CIE-LAB	lab(38.33, 13.16, -48.85)
CIE-LCH	lch(38.33, 50.59, 285.08°)
OKLab	oklab(47.25% -0.0257 -0.1403)
OKLCH	oklch(47.25% 0.143 259.6)
XYZ	xyz(11.5057, 10.2737, 39.3990)
Luminance	0.1027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2558AA #AA7725

analogous

#259BAA #2558AA #3425AA

triadic

#2558AA #AA2558 #58AA25

tetradic

#2558AA #AA259B #AA7725 #25AA34

square

#2558AA #AA259B #AA7725 #25AA34

split-complementary

#2558AA #AA3425 #9BAA25

monochromatic

#0F2445 #1A3E78 #2558AA #3874D4 #6B97DF

Accessibility & contrast

On white

6.87

#2558AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#2558AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2558AA

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2558AA	#FFFFFF	#000000	##FFFFFF
##2558AA	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A61AD

Deuteranopia (green-blind)

#0055A8

Tritanopia (blue-blind)

#006C79

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2558aa;
/* rgb */ color: rgb(37, 88, 170);
/* oklch */ color: oklch(47.3% 0.143 259.6);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#2558aa",
  "rgb": {
    "r": 37,
    "g": 88,
    "b": 170
  },
  "hsl": {
    "h": 216.992,
    "s": 64.251,
    "l": 40.588
  },
  "oklch": {
    "l": 0.47252,
    "c": 0.14266,
    "h": 259.6
  },
  "luminance": 0.10275
}

Semantic roles & 50–950 ramp

primary

#2558AA

secondary

#C5A066

accent

#A741E7

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #2558AA

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

Preview Lab → · Contrast checker → · Palette generator →