#2558AD#2558AD

#2558AD is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.5% C 0.147 H 260.1°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#2558AD
RGB	rgb(37, 88, 173)
HSL	hsl(218, 65%, 41%)
HSV	hsv(218, 79%, 68%)
CMYK	cmyk(78.6%, 49.1%, 0%, 32.2%)
CIE-LAB	lab(38.53, 14.33, -50.30)
CIE-LCH	lch(38.53, 52.30, 285.91°)
OKLab	oklab(47.47% -0.0253 -0.1446)
OKLCH	oklch(47.47% 0.147 260.1)
XYZ	xyz(11.7928, 10.3885, 40.9107)
Luminance	0.1039 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2558AD #AD7A25

analogous

#259CAD #2558AD #3625AD

triadic

#2558AD #AD2558 #58AD25

tetradic

#2558AD #AD259C #AD7A25 #25AD36

square

#2558AD #AD259C #AD7A25 #25AD36

split-complementary

#2558AD #AD3625 #9CAD25

monochromatic

#0F2548 #1A3E7B #2558AD #3A74D5 #6D98E0

Accessibility & contrast

On white

6.82

#2558AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#2558AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2558AD

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2558AD	#FFFFFF	#000000	##FFFFFF
##2558AD	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2761B0

Deuteranopia (green-blind)

#0055AB

Tritanopia (blue-blind)

#006C7A

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2558ad;
/* rgb */ color: rgb(37, 88, 173);
/* oklch */ color: oklch(47.5% 0.147 260.1);

Tailwind

colors: {
  custom: {
    50: '#7586c6',
    500: '#2558ad',
    950: '#000000',
  },
}

SCSS

$custom: #2558ad;
$custom-light: #7586c6;
$custom-dark: #000000;

JSON

{
  "hex": "#2558ad",
  "rgb": {
    "r": 37,
    "g": 88,
    "b": 173
  },
  "hsl": {
    "h": 217.5,
    "s": 64.762,
    "l": 41.176
  },
  "oklch": {
    "l": 0.47472,
    "c": 0.14679,
    "h": 260.1
  },
  "luminance": 0.1039
}

Semantic roles & 50–950 ramp

primary

#2558AD

secondary

#C6A368

accent

#A940E8

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2558AD

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

Preview Lab → · Contrast checker → · Palette generator →