#2156B2#2156B2

#2156B2 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.3% C 0.157 H 260.6°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#2156B2
RGB	rgb(33, 86, 178)
HSL	hsl(218, 69%, 41%)
HSV	hsv(218, 81%, 70%)
CMYK	cmyk(81.5%, 51.7%, 0%, 30.2%)
CIE-LAB	lab(38.18, 17.20, -53.82)
CIE-LCH	lch(38.18, 56.50, 287.72°)
OKLab	oklab(47.28% -0.0255 -0.155)
OKLCH	oklch(47.28% 0.157 260.6)
XYZ	xyz(11.9880, 10.1918, 43.4462)
Luminance	0.1019 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2156B2 #B27D21

analogous

#219FB2 #2156B2 #3521B2

triadic

#2156B2 #B22156 #56B221

tetradic

#2156B2 #B2219F #B27D21 #21B235

square

#2156B2 #B2219F #B27D21 #21B235

split-complementary

#2156B2 #B23521 #9FB221

monochromatic

#0E244B #173D7E #2156B2 #3672DA #6A96E3

Accessibility & contrast

On white

6.91

#2156B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#2156B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2156B2

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2156B2	#FFFFFF	#000000	##FFFFFF
##2156B2	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1861B5

Deuteranopia (green-blind)

#0054B0

Tritanopia (blue-blind)

#006C7B

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2156b2;
/* rgb */ color: rgb(33, 86, 178);
/* oklch */ color: oklch(47.3% 0.157 260.6);

Tailwind

colors: {
  custom: {
    50: '#7585ca',
    500: '#2156b2',
    950: '#000000',
  },
}

SCSS

$custom: #2156b2;
$custom-light: #7585ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2156b2",
  "rgb": {
    "r": 33,
    "g": 86,
    "b": 178
  },
  "hsl": {
    "h": 218.069,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.47282,
    "c": 0.15714,
    "h": 260.6
  },
  "luminance": 0.10193
}

Semantic roles & 50–950 ramp

primary

#2156B2

secondary

#C9A566

accent

#AB3CEC

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2156B2

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

Preview Lab → · Contrast checker → · Palette generator →