#1550B3#1550B3

#1550B3 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.8% C 0.169 H 260.5°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#1550B3
RGB	rgb(21, 80, 179)
HSL	hsl(218, 79%, 39%)
HSV	hsv(218, 88%, 70%)
CMYK	cmyk(88.3%, 55.3%, 0%, 29.8%)
CIE-LAB	lab(36.27, 20.63, -57.53)
CIE-LCH	lch(36.27, 61.11, 289.73°)
OKLab	oklab(45.76% -0.0278 -0.1662)
OKLCH	oklch(45.76% 0.169 260.5)
XYZ	xyz(11.3116, 9.1500, 43.8090)
Luminance	0.0915 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1550B3 #B37815

analogous

#159FB3 #1550B3 #2915B3

triadic

#1550B3 #B31550 #50B315

tetradic

#1550B3 #B3159F #B37815 #15B329

square

#1550B3 #B3159F #B37815 #15B329

split-complementary

#1550B3 #B32915 #9FB315

monochromatic

#081F45 #0F387C #1550B3 #206AE5 #578EEB

Accessibility & contrast

On white

7.42

#1550B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1550B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1550B3

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1550B3	#FFFFFF	#000000	##FFFFFF
##1550B3	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB6

Deuteranopia (green-blind)

#004FB1

Tritanopia (blue-blind)

#006979

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1550b3;
/* rgb */ color: rgb(21, 80, 179);
/* oklch */ color: oklch(45.8% 0.169 260.5);

Tailwind

colors: {
  custom: {
    50: '#7280ca',
    500: '#1550b3',
    950: '#000000',
  },
}

SCSS

$custom: #1550b3;
$custom-light: #7280ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1550b3",
  "rgb": {
    "r": 21,
    "g": 80,
    "b": 179
  },
  "hsl": {
    "h": 217.595,
    "s": 79,
    "l": 39.216
  },
  "oklch": {
    "l": 0.45764,
    "c": 0.16851,
    "h": 260.5
  },
  "luminance": 0.09151
}

Semantic roles & 50–950 ramp

primary

#1550B3

secondary

#CEA156

accent

#AD32F5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1550B3

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

Preview Lab → · Contrast checker → · Palette generator →