#2555B3#2555B3

#2555B3 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.3% C 0.159 H 262.0°. Best body text is #FFFFFF at 6.93:1 contrast (WCAG AA passes).

Color values

HEX	#2555B3
RGB	rgb(37, 85, 179)
HSL	hsl(220, 66%, 42%)
HSV	hsv(220, 79%, 70%)
CMYK	cmyk(79.3%, 52.5%, 0%, 29.8%)
CIE-LAB	lab(38.10, 18.66, -54.54)
CIE-LCH	lch(38.10, 57.64, 288.88°)
OKLab	oklab(47.28% -0.0221 -0.1571)
OKLCH	oklch(47.28% 0.159 262)
XYZ	xyz(12.1452, 10.1436, 43.9569)
Luminance	0.1014 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2555B3 #B38325

analogous

#259CB3 #2555B3 #3C25B3

triadic

#2555B3 #B32555 #55B325

tetradic

#2555B3 #B3259C #B38325 #25B33C

square

#2555B3 #B3259C #B38325 #25B33C

split-complementary

#2555B3 #B33C25 #9CB325

monochromatic

#10254E #1B3D80 #2555B3 #3E72D7 #7197E2

Accessibility & contrast

On white

6.93

#2555B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#2555B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2555B3

6.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2555B3	#FFFFFF	#000000	##FFFFFF
##2555B3	1.00	6.93	3.03	6.93
#FFFFFF	6.93	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1261B6

Deuteranopia (green-blind)

#0054B1

Tritanopia (blue-blind)

#006C7C

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2555b3;
/* rgb */ color: rgb(37, 85, 179);
/* oklch */ color: oklch(47.3% 0.159 262.0);

Tailwind

colors: {
  custom: {
    50: '#7684ca',
    500: '#2555b3',
    950: '#000000',
  },
}

SCSS

$custom: #2555b3;
$custom-light: #7684ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2555b3",
  "rgb": {
    "r": 37,
    "g": 85,
    "b": 179
  },
  "hsl": {
    "h": 219.718,
    "s": 65.741,
    "l": 42.353
  },
  "oklch": {
    "l": 0.47275,
    "c": 0.15869,
    "h": 262
  },
  "luminance": 0.10145
}

Semantic roles & 50–950 ramp

primary

#2555B3

secondary

#C8A96B

accent

#AF3FE9

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2555B3

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

Preview Lab → · Contrast checker → · Palette generator →