#2155A4#2155A4

#2155A4 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.0% C 0.139 H 258.9°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#2155A4
RGB	rgb(33, 85, 164)
HSL	hsl(216, 66%, 39%)
HSV	hsv(216, 80%, 64%)
CMYK	cmyk(79.9%, 48.2%, 0%, 35.7%)
CIE-LAB	lab(36.93, 12.34, -47.54)
CIE-LCH	lch(36.93, 49.11, 284.55°)
OKLab	oklab(46.01% -0.0268 -0.1366)
OKLCH	oklch(46.01% 0.139 258.9)
XYZ	xyz(10.5741, 9.4994, 36.3910)
Luminance	0.0950 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2155A4 #A47021

analogous

#2196A4 #2155A4 #2E21A4

triadic

#2155A4 #A42155 #55A421

tetradic

#2155A4 #A42196 #A47021 #21A42E

square

#2155A4 #A42196 #A47021 #21A42E

split-complementary

#2155A4 #A42E21 #96A421

monochromatic

#0C203E #173B71 #2155A4 #2D70D5 #6093DF

Accessibility & contrast

On white

7.24

#2155A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#2155A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2155A4

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2155A4	#FFFFFF	#000000	##FFFFFF
##2155A4	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#295DA7

Deuteranopia (green-blind)

#0051A2

Tritanopia (blue-blind)

#006874

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #2155a4;
/* rgb */ color: rgb(33, 85, 164);
/* oklch */ color: oklch(46.0% 0.139 258.9);

Tailwind

colors: {
  custom: {
    50: '#7184bf',
    500: '#2155a4',
    950: '#000000',
  },
}

SCSS

$custom: #2155a4;
$custom-light: #7184bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2155a4",
  "rgb": {
    "r": 33,
    "g": 85,
    "b": 164
  },
  "hsl": {
    "h": 216.183,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.46011,
    "c": 0.1392,
    "h": 258.9
  },
  "luminance": 0.09501
}

Semantic roles & 50–950 ramp

primary

#2155A4

secondary

#C49B5D

accent

#A63EE9

background

#F7F8FB

surface

#EDEFF7

border

#C8CAD0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #2155A4

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

Preview Lab → · Contrast checker → · Palette generator →