#2553B0#2553B0

#2553B0 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.6% C 0.157 H 262.3°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#2553B0
RGB	rgb(37, 83, 176)
HSL	hsl(220, 65%, 42%)
HSV	hsv(220, 79%, 69%)
CMYK	cmyk(79%, 52.8%, 0%, 31%)
CIE-LAB	lab(37.32, 18.81, -54.03)
CIE-LCH	lch(37.32, 57.21, 289.20°)
OKLab	oklab(46.62% -0.021 -0.1557)
OKLCH	oklch(46.62% 0.157 262.3)
XYZ	xyz(11.6899, 9.7131, 42.3246)
Luminance	0.0971 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2553B0 #B08225

analogous

#2599B0 #2553B0 #3D25B0

triadic

#2553B0 #B02553 #53B025

tetradic

#2553B0 #B02599 #B08225 #25B03D

square

#2553B0 #B02599 #B08225 #25B03D

split-complementary

#2553B0 #B03D25 #99B025

monochromatic

#10234B #1A3B7D #2553B0 #3C6FD6 #6F94E1

Accessibility & contrast

On white

7.14

#2553B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#2553B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2553B0

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2553B0	#FFFFFF	#000000	##FFFFFF
##2553B0	1.00	7.14	2.94	7.14
#FFFFFF	7.14	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F5FB3

Deuteranopia (green-blind)

#0052AE

Tritanopia (blue-blind)

#006A79

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2553b0;
/* rgb */ color: rgb(37, 83, 176);
/* oklch */ color: oklch(46.6% 0.157 262.3);

Tailwind

colors: {
  custom: {
    50: '#7682c8',
    500: '#2553b0',
    950: '#000000',
  },
}

SCSS

$custom: #2553b0;
$custom-light: #7682c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2553b0",
  "rgb": {
    "r": 37,
    "g": 83,
    "b": 176
  },
  "hsl": {
    "h": 220.144,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.46615,
    "c": 0.15707,
    "h": 262.3
  },
  "luminance": 0.09714
}

Semantic roles & 50–950 ramp

primary

#2553B0

secondary

#C7A86A

accent

#B040E8

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2553B0

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

Preview Lab → · Contrast checker → · Palette generator →