#2155BA#2155BA

#2155BA is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.7% C 0.169 H 261.9°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#2155BA
RGB	rgb(33, 85, 186)
HSL	hsl(220, 70%, 43%)
HSV	hsv(220, 82%, 73%)
CMYK	cmyk(82.3%, 54.3%, 0%, 27.1%)
CIE-LAB	lab(38.49, 20.99, -58.03)
CIE-LCH	lch(38.49, 61.71, 289.89°)
OKLab	oklab(47.7% -0.024 -0.1675)
OKLCH	oklch(47.7% 0.169 261.9)
XYZ	xyz(12.7354, 10.3640, 47.7741)
Luminance	0.1037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2155BA #BA8621

analogous

#21A1BA #2155BA #3A21BA

triadic

#2155BA #BA2155 #55BA21

tetradic

#2155BA #BA21A1 #BA8621 #21BA3A

square

#2155BA #BA21A1 #BA8621 #21BA3A

split-complementary

#2155BA #BA3A21 #A1BA21

monochromatic

#0F2552 #183D86 #2155BA #3C72DC #7098E6

Accessibility & contrast

On white

6.83

#2155BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#2155BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2155BA

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2155BA	#FFFFFF	#000000	##FFFFFF
##2155BA	1.00	6.83	3.07	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062BE

Deuteranopia (green-blind)

#0054B8

Tritanopia (blue-blind)

#006E7F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2155ba;
/* rgb */ color: rgb(33, 85, 186);
/* oklch */ color: oklch(47.7% 0.169 261.9);

Tailwind

colors: {
  custom: {
    50: '#7784cf',
    500: '#2155ba',
    950: '#000000',
  },
}

SCSS

$custom: #2155ba;
$custom-light: #7784cf;
$custom-dark: #000000;

JSON

{
  "hex": "#2155ba",
  "rgb": {
    "r": 33,
    "g": 85,
    "b": 186
  },
  "hsl": {
    "h": 219.608,
    "s": 69.863,
    "l": 42.941
  },
  "oklch": {
    "l": 0.47698,
    "c": 0.16917,
    "h": 261.9
  },
  "luminance": 0.10366
}

Semantic roles & 50–950 ramp

primary

#2155BA

secondary

#CCAB6B

accent

#B03BED

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0A14

muted

#7C7C82

Preview Lab

Preview with #2155BA

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

Preview Lab → · Contrast checker → · Palette generator →