#2553B5#2553B5

#2553B5 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.0% C 0.164 H 262.8°. Best body text is #FFFFFF at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#2553B5
RGB	rgb(37, 83, 181)
HSL	hsl(221, 66%, 43%)
HSV	hsv(221, 80%, 71%)
CMYK	cmyk(79.6%, 54.1%, 0%, 29%)
CIE-LAB	lab(37.69, 20.76, -56.38)
CIE-LCH	lch(37.69, 60.08, 290.21°)
OKLab	oklab(47.01% -0.0205 -0.1626)
OKLCH	oklch(47.01% 0.164 262.8)
XYZ	xyz(12.1937, 9.9146, 44.9782)
Luminance	0.0992 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2553B5 #B58725

analogous

#259BB5 #2553B5 #3F25B5

triadic

#2553B5 #B52553 #53B525

tetradic

#2553B5 #B5259B #B58725 #25B53F

square

#2553B5 #B5259B #B58725 #25B53F

split-complementary

#2553B5 #B53F25 #9BB525

monochromatic

#10244F #1B3C82 #2553B5 #3F70D8 #7296E2

Accessibility & contrast

On white

7.04

#2553B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#2553B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2553B5

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2553B5	#FFFFFF	#000000	##FFFFFF
##2553B5	1.00	7.04	2.98	7.04
#FFFFFF	7.04	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060B8

Deuteranopia (green-blind)

#0052B3

Tritanopia (blue-blind)

#006B7C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2553b5;
/* rgb */ color: rgb(37, 83, 181);
/* oklch */ color: oklch(47.0% 0.164 262.8);

Tailwind

colors: {
  custom: {
    50: '#7782cc',
    500: '#2553b5',
    950: '#000000',
  },
}

SCSS

$custom: #2553b5;
$custom-light: #7782cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2553b5",
  "rgb": {
    "r": 37,
    "g": 83,
    "b": 181
  },
  "hsl": {
    "h": 220.833,
    "s": 66.055,
    "l": 42.745
  },
  "oklch": {
    "l": 0.47009,
    "c": 0.16389,
    "h": 262.8
  },
  "luminance": 0.09916
}

Semantic roles & 50–950 ramp

primary

#2553B5

secondary

#C9AC6D

accent

#B33FE9

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2553B5

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

Preview Lab → · Contrast checker → · Palette generator →