#2157B2#2157B2

#2157B2 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.5% C 0.156 H 260.3°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#2157B2
RGB	rgb(33, 87, 178)
HSL	hsl(218, 69%, 41%)
HSV	hsv(218, 81%, 70%)
CMYK	cmyk(81.5%, 51.1%, 0%, 30.2%)
CIE-LAB	lab(38.47, 16.53, -53.36)
CIE-LCH	lch(38.47, 55.86, 287.21°)
OKLab	oklab(47.5% -0.0263 -0.1537)
OKLCH	oklch(47.5% 0.156 260.3)
XYZ	xyz(12.0684, 10.3526, 43.4730)
Luminance	0.1035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2157B2 #B27C21

analogous

#21A0B2 #2157B2 #3421B2

triadic

#2157B2 #B22157 #57B221

tetradic

#2157B2 #B221A0 #B27C21 #21B234

square

#2157B2 #B221A0 #B27C21 #21B234

split-complementary

#2157B2 #B23421 #A0B221

monochromatic

#0E254B #173E7E #2157B2 #3673DA #6A97E3

Accessibility & contrast

On white

6.84

#2157B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#2157B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2157B2

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2157B2	#FFFFFF	#000000	##FFFFFF
##2157B2	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C62B5

Deuteranopia (green-blind)

#0054B0

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2157b2;
/* rgb */ color: rgb(33, 87, 178);
/* oklch */ color: oklch(47.5% 0.156 260.3);

Tailwind

colors: {
  custom: {
    50: '#7585ca',
    500: '#2157b2',
    950: '#000000',
  },
}

SCSS

$custom: #2157b2;
$custom-light: #7585ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2157b2",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 178
  },
  "hsl": {
    "h": 217.655,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.47499,
    "c": 0.15591,
    "h": 260.3
  },
  "luminance": 0.10354
}

Semantic roles & 50–950 ramp

primary

#2157B2

secondary

#C9A466

accent

#AA3CEC

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2157B2

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

Preview Lab → · Contrast checker → · Palette generator →