#2558AC#2558AC

#2558AC is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.4% C 0.145 H 259.9°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#2558AC
RGB	rgb(37, 88, 172)
HSL	hsl(217, 65%, 41%)
HSV	hsv(217, 78%, 67%)
CMYK	cmyk(78.5%, 48.8%, 0%, 32.5%)
CIE-LAB	lab(38.46, 13.94, -49.82)
CIE-LCH	lch(38.46, 51.73, 285.64°)
OKLab	oklab(47.4% -0.0254 -0.1432)
OKLCH	oklch(47.4% 0.145 259.9)
XYZ	xyz(11.6964, 10.3500, 40.4030)
Luminance	0.1035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2558AC #AC7925

analogous

#259BAC #2558AC #3525AC

triadic

#2558AC #AC2558 #58AC25

tetradic

#2558AC #AC259B #AC7925 #25AC35

square

#2558AC #AC259B #AC7925 #25AC35

split-complementary

#2558AC #AC3525 #9BAC25

monochromatic

#0F2447 #1A3E7A #2558AC #3A74D5 #6C98DF

Accessibility & contrast

On white

6.84

#2558AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#2558AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2558AC

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2558AC	#FFFFFF	#000000	##FFFFFF
##2558AC	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2861AF

Deuteranopia (green-blind)

#0055AA

Tritanopia (blue-blind)

#006C7A

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2558ac;
/* rgb */ color: rgb(37, 88, 172);
/* oklch */ color: oklch(47.4% 0.145 259.9);

Tailwind

colors: {
  custom: {
    50: '#7486c5',
    500: '#2558ac',
    950: '#000000',
  },
}

SCSS

$custom: #2558ac;
$custom-light: #7486c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2558ac",
  "rgb": {
    "r": 37,
    "g": 88,
    "b": 172
  },
  "hsl": {
    "h": 217.333,
    "s": 64.593,
    "l": 40.98
  },
  "oklch": {
    "l": 0.47398,
    "c": 0.14541,
    "h": 259.9
  },
  "luminance": 0.10351
}

Semantic roles & 50–950 ramp

primary

#2558AC

secondary

#C6A267

accent

#A840E8

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2558AC

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

Preview Lab → · Contrast checker → · Palette generator →