#2555B5#2555B5

#2555B5 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.4% C 0.161 H 262.2°. Best body text is #FFFFFF at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#2555B5
RGB	rgb(37, 85, 181)
HSL	hsl(220, 66%, 43%)
HSV	hsv(220, 80%, 71%)
CMYK	cmyk(79.6%, 53%, 0%, 29%)
CIE-LAB	lab(38.24, 19.43, -55.49)
CIE-LCH	lch(38.24, 58.79, 289.30°)
OKLab	oklab(47.43% -0.0219 -0.1599)
OKLCH	oklch(47.43% 0.161 262.2)
XYZ	xyz(12.3489, 10.2251, 45.0299)
Luminance	0.1023 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2555B5 #B58525

analogous

#259DB5 #2555B5 #3D25B5

triadic

#2555B5 #B52555 #55B525

tetradic

#2555B5 #B5259D #B58525 #25B53D

square

#2555B5 #B5259D #B58525 #25B53D

split-complementary

#2555B5 #B53D25 #9DB525

monochromatic

#10254F #1B3D82 #2555B5 #3F72D8 #7298E2

Accessibility & contrast

On white

6.90

#2555B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#2555B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2555B5

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2555B5	#FFFFFF	#000000	##FFFFFF
##2555B5	1.00	6.90	3.05	6.90
#FFFFFF	6.90	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C61B8

Deuteranopia (green-blind)

#0054B3

Tritanopia (blue-blind)

#006C7D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2555b5;
/* rgb */ color: rgb(37, 85, 181);
/* oklch */ color: oklch(47.4% 0.161 262.2);

Tailwind

colors: {
  custom: {
    50: '#7784cc',
    500: '#2555b5',
    950: '#000000',
  },
}

SCSS

$custom: #2555b5;
$custom-light: #7784cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2555b5",
  "rgb": {
    "r": 37,
    "g": 85,
    "b": 181
  },
  "hsl": {
    "h": 220,
    "s": 66.055,
    "l": 42.745
  },
  "oklch": {
    "l": 0.47431,
    "c": 0.16141,
    "h": 262.2
  },
  "luminance": 0.10227
}

Semantic roles & 50–950 ramp

primary

#2555B5

secondary

#C9AA6D

accent

#B03FE9

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2555B5

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

Preview Lab → · Contrast checker → · Palette generator →