#2155A8#2155A8

#2155A8 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.3% C 0.145 H 259.6°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#2155A8
RGB	rgb(33, 85, 168)
HSL	hsl(217, 67%, 39%)
HSV	hsv(217, 80%, 66%)
CMYK	cmyk(80.4%, 49.4%, 0%, 34.1%)
CIE-LAB	lab(37.20, 13.92, -49.49)
CIE-LCH	lch(37.20, 51.41, 285.71°)
OKLab	oklab(46.31% -0.0262 -0.1423)
OKLCH	oklch(46.31% 0.145 259.6)
XYZ	xyz(10.9410, 9.6462, 38.3235)
Luminance	0.0965 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2155A8 #A87421

analogous

#2199A8 #2155A8 #3121A8

triadic

#2155A8 #A82155 #55A821

tetradic

#2155A8 #A82199 #A87421 #21A831

square

#2155A8 #A82199 #A87421 #21A831

split-complementary

#2155A8 #A83121 #99A821

monochromatic

#0D2142 #173B75 #2155A8 #3070D6 #6393E0

Accessibility & contrast

On white

7.17

#2155A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#2155A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2155A8

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2155A8	#FFFFFF	#000000	##FFFFFF
##2155A8	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#245EAB

Deuteranopia (green-blind)

#0052A6

Tritanopia (blue-blind)

#006976

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2155a8;
/* rgb */ color: rgb(33, 85, 168);
/* oklch */ color: oklch(46.3% 0.145 259.6);

Tailwind

colors: {
  custom: {
    50: '#7284c2',
    500: '#2155a8',
    950: '#000000',
  },
}

SCSS

$custom: #2155a8;
$custom-light: #7284c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2155a8",
  "rgb": {
    "r": 33,
    "g": 85,
    "b": 168
  },
  "hsl": {
    "h": 216.889,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.46306,
    "c": 0.14471,
    "h": 259.6
  },
  "luminance": 0.09647
}

Semantic roles & 50–950 ramp

primary

#2155A8

secondary

#C59E5F

accent

#A83EEA

background

#F7F8FC

surface

#EDEFF8

border

#C8CAD1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #2155A8

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

Preview Lab → · Contrast checker → · Palette generator →