#2157B4#2157B4

#2157B4 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.7% C 0.159 H 260.6°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#2157B4
RGB	rgb(33, 87, 180)
HSL	hsl(218, 69%, 42%)
HSV	hsv(218, 82%, 71%)
CMYK	cmyk(81.7%, 51.7%, 0%, 29.4%)
CIE-LAB	lab(38.61, 17.32, -54.31)
CIE-LCH	lch(38.61, 57.00, 287.69°)
OKLab	oklab(47.65% -0.026 -0.1565)
OKLCH	oklch(47.65% 0.159 260.6)
XYZ	xyz(12.2706, 10.4335, 44.5383)
Luminance	0.1043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2157B4 #B47E21

analogous

#21A1B4 #2157B4 #3421B4

triadic

#2157B4 #B42157 #57B421

tetradic

#2157B4 #B421A1 #B47E21 #21B434

square

#2157B4 #B421A1 #B47E21 #21B434

split-complementary

#2157B4 #B43421 #A1B421

monochromatic

#0E254D #183E80 #2157B4 #3874DA #6B98E4

Accessibility & contrast

On white

6.80

#2157B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#2157B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2157B4

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2157B4	#FFFFFF	#000000	##FFFFFF
##2157B4	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1862B7

Deuteranopia (green-blind)

#0055B2

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2157b4;
/* rgb */ color: rgb(33, 87, 180);
/* oklch */ color: oklch(47.7% 0.159 260.6);

Tailwind

colors: {
  custom: {
    50: '#7585cb',
    500: '#2157b4',
    950: '#000000',
  },
}

SCSS

$custom: #2157b4;
$custom-light: #7585cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2157b4",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 180
  },
  "hsl": {
    "h": 217.959,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.47652,
    "c": 0.15862,
    "h": 260.6
  },
  "luminance": 0.10435
}

Semantic roles & 50–950 ramp

primary

#2157B4

secondary

#CAA667

accent

#AB3CEC

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2157B4

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

Preview Lab → · Contrast checker → · Palette generator →