#2548A5#2548A5

#2548A5 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.4% C 0.156 H 264.9°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#2548A5
RGB	rgb(37, 72, 165)
HSL	hsl(224, 63%, 40%)
HSV	hsv(224, 78%, 65%)
CMYK	cmyk(77.6%, 56.4%, 0%, 35.3%)
CIE-LAB	lab(33.44, 21.89, -53.77)
CIE-LCH	lch(33.44, 58.06, 292.16°)
OKLab	oklab(43.42% -0.0138 -0.1551)
OKLCH	oklch(43.42% 0.156 264.9)
XYZ	xyz(9.8694, 7.7435, 36.5645)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2548A5 #A58225

analogous

#2588A5 #2548A5 #4225A5

triadic

#2548A5 #A52548 #48A525

tetradic

#2548A5 #A52588 #A58225 #25A542

square

#2548A5 #A52588 #A58225 #25A542

split-complementary

#2548A5 #A54225 #88A525

monochromatic

#0F1C41 #1A3273 #2548A5 #3560D2 #6788DD

Accessibility & contrast

On white

8.24

#2548A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#2548A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2548A5

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2548A5	#FFFFFF	#000000	##FFFFFF
##2548A5	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055A8

Deuteranopia (green-blind)

#0049A3

Tritanopia (blue-blind)

#005F6F

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2548a5;
/* rgb */ color: rgb(37, 72, 165);
/* oklch */ color: oklch(43.4% 0.156 264.9);

Tailwind

colors: {
  custom: {
    50: '#747ac0',
    500: '#2548a5',
    950: '#000000',
  },
}

SCSS

$custom: #2548a5;
$custom-light: #747ac0;
$custom-dark: #000000;

JSON

{
  "hex": "#2548a5",
  "rgb": {
    "r": 37,
    "g": 72,
    "b": 165
  },
  "hsl": {
    "h": 223.594,
    "s": 63.366,
    "l": 39.608
  },
  "oklch": {
    "l": 0.43418,
    "c": 0.15571,
    "h": 264.9
  },
  "luminance": 0.07745
}

Semantic roles & 50–950 ramp

primary

#2548A5

secondary

#C3A963

accent

#B941E6

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #2548A5

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

Preview Lab → · Contrast checker → · Palette generator →