#2157A8#2157A8

#2157A8 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 46.8% C 0.142 H 258.7°. Best body text is #FFFFFF at 7.02:1 contrast (WCAG AA passes).

Color values

HEX	#2157A8
RGB	rgb(33, 87, 168)
HSL	hsl(216, 67%, 39%)
HSV	hsv(216, 80%, 66%)
CMYK	cmyk(80.4%, 48.2%, 0%, 34.1%)
CIE-LAB	lab(37.78, 12.59, -48.55)
CIE-LCH	lch(37.78, 50.16, 284.54°)
OKLab	oklab(46.75% -0.0278 -0.1395)
OKLCH	oklch(46.75% 0.142 258.7)
XYZ	xyz(11.1007, 9.9656, 38.3767)
Luminance	0.0997 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2157A8 #A87221

analogous

#219BA8 #2157A8 #2F21A8

triadic

#2157A8 #A82157 #57A821

tetradic

#2157A8 #A8219B #A87221 #21A82F

square

#2157A8 #A8219B #A87221 #21A82F

split-complementary

#2157A8 #A82F21 #9BA821

monochromatic

#0D2242 #173D75 #2157A8 #3072D6 #6395E0

Accessibility & contrast

On white

7.02

#2157A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#2157A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2157A8

7.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2157A8	#FFFFFF	#000000	##FFFFFF
##2157A8	1.00	7.02	2.99	7.02
#FFFFFF	7.02	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#295FAB

Deuteranopia (green-blind)

#0053A6

Tritanopia (blue-blind)

#006A77

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2157a8;
/* rgb */ color: rgb(33, 87, 168);
/* oklch */ color: oklch(46.8% 0.142 258.7);

Tailwind

colors: {
  custom: {
    50: '#7285c2',
    500: '#2157a8',
    950: '#000000',
  },
}

SCSS

$custom: #2157a8;
$custom-light: #7285c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2157a8",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 168
  },
  "hsl": {
    "h": 216,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.46752,
    "c": 0.14226,
    "h": 258.7
  },
  "luminance": 0.09967
}

Semantic roles & 50–950 ramp

primary

#2157A8

secondary

#C59D5F

accent

#A53EEA

background

#F7F8FC

surface

#EDEFF8

border

#C8CAD1

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2157A8

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

Preview Lab → · Contrast checker → · Palette generator →