#2157BD#2157BD

#2157BD is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.4% C 0.171 H 261.6°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#2157BD
RGB	rgb(33, 87, 189)
HSL	hsl(219, 70%, 44%)
HSV	hsv(219, 83%, 74%)
CMYK	cmyk(82.5%, 54%, 0%, 25.9%)
CIE-LAB	lab(39.26, 20.84, -58.53)
CIE-LCH	lch(39.26, 62.13, 289.60°)
OKLab	oklab(48.36% -0.025 -0.1689)
OKLCH	oklch(48.36% 0.171 261.6)
XYZ	xyz(13.2174, 10.8122, 49.5246)
Luminance	0.1081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2157BD #BD8721

analogous

#21A5BD #2157BD #3921BD

triadic

#2157BD #BD2157 #57BD21

tetradic

#2157BD #BD21A5 #BD8721 #21BD39

square

#2157BD #BD21A5 #BD8721 #21BD39

split-complementary

#2157BD #BD3921 #A5BD21

monochromatic

#0F2755 #183F89 #2157BD #3E75DD #729AE6

Accessibility & contrast

On white

6.64

#2157BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#2157BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2157BD

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2157BD	#FFFFFF	#000000	##FFFFFF
##2157BD	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C1

Deuteranopia (green-blind)

#0056BB

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2157bd;
/* rgb */ color: rgb(33, 87, 189);
/* oklch */ color: oklch(48.4% 0.171 261.6);

Tailwind

colors: {
  custom: {
    50: '#7785d2',
    500: '#2157bd',
    950: '#000000',
  },
}

SCSS

$custom: #2157bd;
$custom-light: #7785d2;
$custom-dark: #000000;

JSON

{
  "hex": "#2157bd",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 189
  },
  "hsl": {
    "h": 219.231,
    "s": 70.27,
    "l": 43.529
  },
  "oklch": {
    "l": 0.48356,
    "c": 0.17072,
    "h": 261.6
  },
  "luminance": 0.10814
}

Semantic roles & 50–950 ramp

primary

#2157BD

secondary

#CDAC6D

accent

#AF3BED

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0A0B14

muted

#7C7C83

Preview Lab

Preview with #2157BD

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

Preview Lab → · Contrast checker → · Palette generator →