#2157A3#2157A3

#2157A3 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.4% C 0.135 H 257.8°. Best body text is #FFFFFF at 7.10:1 contrast (WCAG AA passes).

Color values

HEX	#2157A3
RGB	rgb(33, 87, 163)
HSL	hsl(215, 66%, 38%)
HSV	hsv(215, 80%, 64%)
CMYK	cmyk(79.8%, 46.6%, 0%, 36.1%)
CIE-LAB	lab(37.45, 10.62, -46.10)
CIE-LCH	lch(37.45, 47.31, 282.97°)
OKLab	oklab(46.39% -0.0286 -0.1323)
OKLCH	oklch(46.39% 0.135 257.8)
XYZ	xyz(10.6438, 9.7828, 35.9705)
Luminance	0.0978 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2157A3 #A36D21

analogous

#2198A3 #2157A3 #2C21A3

triadic

#2157A3 #A32157 #57A321

tetradic

#2157A3 #A32198 #A36D21 #21A32C

square

#2157A3 #A32198 #A36D21 #21A32C

split-complementary

#2157A3 #A32C21 #98A321

monochromatic

#0C213D #173C70 #2157A3 #2D72D4 #6094DF

Accessibility & contrast

On white

7.10

#2157A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#2157A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2157A3

7.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2157A3	#FFFFFF	#000000	##FFFFFF
##2157A3	1.00	7.10	2.96	7.10
#FFFFFF	7.10	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E5EA6

Deuteranopia (green-blind)

#0D53A1

Tritanopia (blue-blind)

#006975

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2157a3;
/* rgb */ color: rgb(33, 87, 163);
/* oklch */ color: oklch(46.4% 0.135 257.8);

Tailwind

colors: {
  custom: {
    50: '#7185bf',
    500: '#2157a3',
    950: '#000000',
  },
}

SCSS

$custom: #2157a3;
$custom-light: #7185bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2157a3",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 163
  },
  "hsl": {
    "h": 215.077,
    "s": 66.327,
    "l": 38.431
  },
  "oklch": {
    "l": 0.46391,
    "c": 0.13538,
    "h": 257.8
  },
  "luminance": 0.09784
}

Semantic roles & 50–950 ramp

primary

#2157A3

secondary

#C3995C

accent

#A23FE9

background

#F7F8FB

surface

#EDEFF7

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2157A3

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

Preview Lab → · Contrast checker → · Palette generator →