#2156B4#2156B4

#2156B4 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.4% C 0.160 H 260.9°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#2156B4
RGB	rgb(33, 86, 180)
HSL	hsl(218, 69%, 42%)
HSV	hsv(218, 82%, 71%)
CMYK	cmyk(81.7%, 52.2%, 0%, 29.4%)
CIE-LAB	lab(38.33, 17.98, -54.77)
CIE-LCH	lch(38.33, 57.64, 288.18°)
OKLab	oklab(47.44% -0.0253 -0.1578)
OKLCH	oklch(47.44% 0.16 260.9)
XYZ	xyz(12.1902, 10.2727, 44.5115)
Luminance	0.1027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2156B4 #B47F21

analogous

#21A0B4 #2156B4 #3521B4

triadic

#2156B4 #B42156 #56B421

tetradic

#2156B4 #B421A0 #B47F21 #21B435

square

#2156B4 #B421A0 #B47F21 #21B435

split-complementary

#2156B4 #B43521 #A0B421

monochromatic

#0E254D #183D80 #2156B4 #3872DA #6B97E4

Accessibility & contrast

On white

6.87

#2156B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#2156B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2156B4

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2156B4	#FFFFFF	#000000	##FFFFFF
##2156B4	1.00	6.87	3.05	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1461B7

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2156b4;
/* rgb */ color: rgb(33, 86, 180);
/* oklch */ color: oklch(47.4% 0.160 260.9);

Tailwind

colors: {
  custom: {
    50: '#7585cb',
    500: '#2156b4',
    950: '#000000',
  },
}

SCSS

$custom: #2156b4;
$custom-light: #7585cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2156b4",
  "rgb": {
    "r": 33,
    "g": 86,
    "b": 180
  },
  "hsl": {
    "h": 218.367,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.47437,
    "c": 0.15985,
    "h": 260.9
  },
  "luminance": 0.10274
}

Semantic roles & 50–950 ramp

primary

#2156B4

secondary

#CAA667

accent

#AC3CEC

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2156B4

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

Preview Lab → · Contrast checker → · Palette generator →