#2553B3#2553B3

#2553B3 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.9% C 0.161 H 262.6°. Best body text is #FFFFFF at 7.08:1 contrast (WCAG AA passes).

Color values

HEX	#2553B3
RGB	rgb(37, 83, 179)
HSL	hsl(221, 66%, 42%)
HSV	hsv(221, 79%, 70%)
CMYK	cmyk(79.3%, 53.6%, 0%, 29.8%)
CIE-LAB	lab(37.54, 19.98, -55.44)
CIE-LCH	lch(37.54, 58.94, 289.82°)
OKLab	oklab(46.85% -0.0207 -0.1598)
OKLCH	oklch(46.85% 0.161 262.6)
XYZ	xyz(11.9900, 9.8331, 43.9051)
Luminance	0.0984 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2553B3 #B38525

analogous

#259AB3 #2553B3 #3E25B3

triadic

#2553B3 #B32553 #53B325

tetradic

#2553B3 #B3259A #B38525 #25B33E

square

#2553B3 #B3259A #B38525 #25B33E

split-complementary

#2553B3 #B33E25 #9AB325

monochromatic

#10244E #1B3B80 #2553B3 #3E70D7 #7195E2

Accessibility & contrast

On white

7.08

#2553B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#2553B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2553B3

7.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2553B3	#FFFFFF	#000000	##FFFFFF
##2553B3	1.00	7.08	2.97	7.08
#FFFFFF	7.08	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#055FB6

Deuteranopia (green-blind)

#0052B1

Tritanopia (blue-blind)

#006B7B

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2553b3;
/* rgb */ color: rgb(37, 83, 179);
/* oklch */ color: oklch(46.9% 0.161 262.6);

Tailwind

colors: {
  custom: {
    50: '#7682ca',
    500: '#2553b3',
    950: '#000000',
  },
}

SCSS

$custom: #2553b3;
$custom-light: #7682ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2553b3",
  "rgb": {
    "r": 37,
    "g": 83,
    "b": 179
  },
  "hsl": {
    "h": 220.563,
    "s": 65.741,
    "l": 42.353
  },
  "oklch": {
    "l": 0.46851,
    "c": 0.16116,
    "h": 262.6
  },
  "luminance": 0.09835
}

Semantic roles & 50–950 ramp

primary

#2553B3

secondary

#C8AA6B

accent

#B23FE9

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2553B3

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

Preview Lab → · Contrast checker → · Palette generator →