#2555B1#2555B1

#2555B1 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.1% C 0.156 H 261.7°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#2555B1
RGB	rgb(37, 85, 177)
HSL	hsl(219, 65%, 42%)
HSV	hsv(219, 79%, 69%)
CMYK	cmyk(79.1%, 52%, 0%, 30.6%)
CIE-LAB	lab(37.96, 17.88, -53.59)
CIE-LCH	lch(37.96, 56.50, 288.45°)
OKLab	oklab(47.12% -0.0224 -0.1543)
OKLCH	oklch(47.12% 0.156 261.7)
XYZ	xyz(11.9444, 10.0632, 42.8993)
Luminance	0.1007 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2555B1 #B18125

analogous

#259BB1 #2555B1 #3B25B1

triadic

#2555B1 #B12555 #55B125

tetradic

#2555B1 #B1259B #B18125 #25B13B

square

#2555B1 #B1259B #B18125 #25B13B

split-complementary

#2555B1 #B13B25 #9BB125

monochromatic

#10244C #1A3D7E #2555B1 #3D71D6 #6F96E1

Accessibility & contrast

On white

6.97

#2555B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#2555B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2555B1

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2555B1	#FFFFFF	#000000	##FFFFFF
##2555B1	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1760B4

Deuteranopia (green-blind)

#0053AF

Tritanopia (blue-blind)

#006B7B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2555b1;
/* rgb */ color: rgb(37, 85, 177);
/* oklch */ color: oklch(47.1% 0.156 261.7);

Tailwind

colors: {
  custom: {
    50: '#7684c9',
    500: '#2555b1',
    950: '#000000',
  },
}

SCSS

$custom: #2555b1;
$custom-light: #7684c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2555b1",
  "rgb": {
    "r": 37,
    "g": 85,
    "b": 177
  },
  "hsl": {
    "h": 219.429,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.4712,
    "c": 0.15596,
    "h": 261.7
  },
  "luminance": 0.10065
}

Semantic roles & 50–950 ramp

primary

#2555B1

secondary

#C8A86A

accent

#AE3FE8

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2555B1

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

Preview Lab → · Contrast checker → · Palette generator →