#2553B1#2553B1

#2553B1 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.7% C 0.158 H 262.4°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#2553B1
RGB	rgb(37, 83, 177)
HSL	hsl(220, 65%, 42%)
HSV	hsv(220, 79%, 69%)
CMYK	cmyk(79.1%, 53.1%, 0%, 30.6%)
CIE-LAB	lab(37.40, 19.20, -54.50)
CIE-LCH	lch(37.40, 57.79, 289.41°)
OKLab	oklab(46.69% -0.0209 -0.1571)
OKLCH	oklch(46.69% 0.158 262.4)
XYZ	xyz(11.7892, 9.7528, 42.8476)
Luminance	0.0975 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2553B1 #B18325

analogous

#2599B1 #2553B1 #3D25B1

triadic

#2553B1 #B12553 #53B125

tetradic

#2553B1 #B12599 #B18325 #25B13D

square

#2553B1 #B12599 #B18325 #25B13D

split-complementary

#2553B1 #B13D25 #99B125

monochromatic

#10244C #1A3B7E #2553B1 #3D6FD6 #6F95E1

Accessibility & contrast

On white

7.12

#2553B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#2553B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2553B1

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2553B1	#FFFFFF	#000000	##FFFFFF
##2553B1	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C5FB4

Deuteranopia (green-blind)

#0052AF

Tritanopia (blue-blind)

#006A7A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2553b1;
/* rgb */ color: rgb(37, 83, 177);
/* oklch */ color: oklch(46.7% 0.158 262.4);

Tailwind

colors: {
  custom: {
    50: '#7682c9',
    500: '#2553b1',
    950: '#000000',
  },
}

SCSS

$custom: #2553b1;
$custom-light: #7682c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2553b1",
  "rgb": {
    "r": 37,
    "g": 83,
    "b": 177
  },
  "hsl": {
    "h": 220.286,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.46694,
    "c": 0.15844,
    "h": 262.4
  },
  "luminance": 0.09754
}

Semantic roles & 50–950 ramp

primary

#2553B1

secondary

#C8A96A

accent

#B13FE8

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2553B1

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

Preview Lab → · Contrast checker → · Palette generator →