#2451A8#2451A8

#2451A8 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.5% C 0.149 H 261.9°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#2451A8
RGB	rgb(36, 81, 168)
HSL	hsl(220, 65%, 40%)
HSV	hsv(220, 79%, 66%)
CMYK	cmyk(78.6%, 51.8%, 0%, 34.1%)
CIE-LAB	lab(36.15, 16.91, -51.18)
CIE-LCH	lch(36.15, 53.90, 288.29°)
OKLab	oklab(45.53% -0.0211 -0.1473)
OKLCH	oklch(45.53% 0.149 261.9)
XYZ	xyz(10.7353, 9.0858, 38.2261)
Luminance	0.0909 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2451A8 #A87B24

analogous

#2493A8 #2451A8 #3924A8

triadic

#2451A8 #A82451 #51A824

tetradic

#2451A8 #A82493 #A87B24 #24A839

square

#2451A8 #A82493 #A87B24 #24A839

split-complementary

#2451A8 #A83924 #93A824

monochromatic

#0E2043 #193976 #2451A8 #356BD4 #6890DF

Accessibility & contrast

On white

7.45

#2451A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#2451A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2451A8

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2451A8	#FFFFFF	#000000	##FFFFFF
##2451A8	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#185BAB

Deuteranopia (green-blind)

#004FA6

Tritanopia (blue-blind)

#006674

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #2451a8;
/* rgb */ color: rgb(36, 81, 168);
/* oklch */ color: oklch(45.5% 0.149 261.9);

Tailwind

colors: {
  custom: {
    50: '#7381c2',
    500: '#2451a8',
    950: '#000000',
  },
}

SCSS

$custom: #2451a8;
$custom-light: #7381c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2451a8",
  "rgb": {
    "r": 36,
    "g": 81,
    "b": 168
  },
  "hsl": {
    "h": 219.545,
    "s": 64.706,
    "l": 40
  },
  "oklch": {
    "l": 0.4553,
    "c": 0.14883,
    "h": 261.9
  },
  "luminance": 0.09087
}

Semantic roles & 50–950 ramp

primary

#2451A8

secondary

#C4A363

accent

#AF40E8

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #2451A8

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

Preview Lab → · Contrast checker → · Palette generator →