#2157AD#2157AD

#2157AD is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.1% C 0.149 H 259.6°. Best body text is #FFFFFF at 6.93:1 contrast (WCAG AA passes).

Color values

HEX	#2157AD
RGB	rgb(33, 87, 173)
HSL	hsl(217, 68%, 40%)
HSV	hsv(217, 81%, 68%)
CMYK	cmyk(80.9%, 49.7%, 0%, 32.2%)
CIE-LAB	lab(38.12, 14.56, -50.97)
CIE-LCH	lch(38.12, 53.01, 285.95°)
OKLab	oklab(47.12% -0.027 -0.1466)
OKLCH	oklch(47.12% 0.149 259.6)
XYZ	xyz(11.5755, 10.1555, 40.8772)
Luminance	0.1016 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2157AD #AD7721

analogous

#219DAD #2157AD #3121AD

triadic

#2157AD #AD2157 #57AD21

tetradic

#2157AD #AD219D #AD7721 #21AD31

square

#2157AD #AD219D #AD7721 #21AD31

split-complementary

#2157AD #AD3121 #9DAD21

monochromatic

#0D2346 #173D7A #2157AD #3373D8 #6696E2

Accessibility & contrast

On white

6.93

#2157AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#2157AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2157AD

6.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2157AD	#FFFFFF	#000000	##FFFFFF
##2157AD	1.00	6.93	3.03	6.93
#FFFFFF	6.93	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2360B0

Deuteranopia (green-blind)

#0054AB

Tritanopia (blue-blind)

#006C7A

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2157ad;
/* rgb */ color: rgb(33, 87, 173);
/* oklch */ color: oklch(47.1% 0.149 259.6);

Tailwind

colors: {
  custom: {
    50: '#7385c6',
    500: '#2157ad',
    950: '#000000',
  },
}

SCSS

$custom: #2157ad;
$custom-light: #7385c6;
$custom-dark: #000000;

JSON

{
  "hex": "#2157ad",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 173
  },
  "hsl": {
    "h": 216.857,
    "s": 67.961,
    "l": 40.392
  },
  "oklch": {
    "l": 0.47122,
    "c": 0.1491,
    "h": 259.6
  },
  "luminance": 0.10157
}

Semantic roles & 50–950 ramp

primary

#2157AD

secondary

#C7A062

accent

#A83DEB

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #2157AD

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

Preview Lab → · Contrast checker → · Palette generator →