#2157AC#2157AC

#2157AC is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.0% C 0.148 H 259.4°. Best body text is #FFFFFF at 6.95:1 contrast (WCAG AA passes).

Color values

HEX	#2157AC
RGB	rgb(33, 87, 172)
HSL	hsl(217, 68%, 40%)
HSV	hsv(217, 81%, 67%)
CMYK	cmyk(80.8%, 49.4%, 0%, 32.5%)
CIE-LAB	lab(38.05, 14.17, -50.49)
CIE-LCH	lch(38.05, 52.44, 285.68°)
OKLab	oklab(47.05% -0.0271 -0.1452)
OKLCH	oklch(47.05% 0.148 259.4)
XYZ	xyz(11.4791, 10.1169, 40.3695)
Luminance	0.1012 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2157AC #AC7621

analogous

#219CAC #2157AC #3121AC

triadic

#2157AC #AC2157 #57AC21

tetradic

#2157AC #AC219C #AC7621 #21AC31

square

#2157AC #AC219C #AC7621 #21AC31

split-complementary

#2157AC #AC3121 #9CAC21

monochromatic

#0D2345 #173D79 #2157AC #3273D8 #6696E2

Accessibility & contrast

On white

6.95

#2157AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#2157AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2157AC

6.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2157AC	#FFFFFF	#000000	##FFFFFF
##2157AC	1.00	6.95	3.02	6.95
#FFFFFF	6.95	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2560AF

Deuteranopia (green-blind)

#0054AA

Tritanopia (blue-blind)

#006B79

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2157ac;
/* rgb */ color: rgb(33, 87, 172);
/* oklch */ color: oklch(47.0% 0.148 259.4);

Tailwind

colors: {
  custom: {
    50: '#7385c5',
    500: '#2157ac',
    950: '#000000',
  },
}

SCSS

$custom: #2157ac;
$custom-light: #7385c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2157ac",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 172
  },
  "hsl": {
    "h": 216.691,
    "s": 67.805,
    "l": 40.196
  },
  "oklch": {
    "l": 0.47047,
    "c": 0.14773,
    "h": 259.4
  },
  "luminance": 0.10118
}

Semantic roles & 50–950 ramp

primary

#2157AC

secondary

#C7A062

accent

#A73DEB

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #2157AC

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

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