#2555B0#2555B0

#2555B0 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.0% C 0.155 H 261.6°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#2555B0
RGB	rgb(37, 85, 176)
HSL	hsl(219, 65%, 42%)
HSV	hsv(219, 79%, 69%)
CMYK	cmyk(79%, 51.7%, 0%, 31%)
CIE-LAB	lab(37.88, 17.49, -53.12)
CIE-LCH	lch(37.88, 55.92, 288.22°)
OKLab	oklab(47.04% -0.0225 -0.1529)
OKLCH	oklch(47.04% 0.155 261.6)
XYZ	xyz(11.8451, 10.0235, 42.3763)
Luminance	0.1003 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2555B0 #B08025

analogous

#259AB0 #2555B0 #3B25B0

triadic

#2555B0 #B02555 #55B025

tetradic

#2555B0 #B0259A #B08025 #25B03B

square

#2555B0 #B0259A #B08025 #25B03B

split-complementary

#2555B0 #B03B25 #9AB025

monochromatic

#10244B #1A3D7D #2555B0 #3C71D6 #6F96E1

Accessibility & contrast

On white

6.99

#2555B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#2555B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2555B0

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2555B0	#FFFFFF	#000000	##FFFFFF
##2555B0	1.00	6.99	3.01	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1960B3

Deuteranopia (green-blind)

#0053AE

Tritanopia (blue-blind)

#006B7A

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2555b0;
/* rgb */ color: rgb(37, 85, 176);
/* oklch */ color: oklch(47.0% 0.155 261.6);

Tailwind

colors: {
  custom: {
    50: '#7584c8',
    500: '#2555b0',
    950: '#000000',
  },
}

SCSS

$custom: #2555b0;
$custom-light: #7584c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2555b0",
  "rgb": {
    "r": 37,
    "g": 85,
    "b": 176
  },
  "hsl": {
    "h": 219.281,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.47044,
    "c": 0.1546,
    "h": 261.6
  },
  "luminance": 0.10025
}

Semantic roles & 50–950 ramp

primary

#2555B0

secondary

#C7A76A

accent

#AE40E8

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2555B0

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

Preview Lab → · Contrast checker → · Palette generator →