#1B3EA7#1B3EA7

#1B3EA7 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.2% C 0.173 H 265.1°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#1B3EA7
RGB	rgb(27, 62, 167)
HSL	hsl(225, 72%, 38%)
HSV	hsv(225, 84%, 65%)
CMYK	cmyk(83.8%, 62.9%, 0%, 34.5%)
CIE-LAB	lab(30.56, 28.43, -59.68)
CIE-LCH	lch(30.56, 66.11, 295.47°)
OKLab	oklab(41.21% -0.0148 -0.1728)
OKLCH	oklch(41.21% 0.173 265.1)
XYZ	xyz(9.1472, 6.4672, 37.3179)
Luminance	0.0647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3EA7 #A7841B

analogous

#1B84A7 #1B3EA7 #3E1BA7

triadic

#1B3EA7 #A71B3E #3EA71B

tetradic

#1B3EA7 #A71B84 #A7841B #1BA73E

square

#1B3EA7 #A71B84 #A7841B #1BA73E

split-complementary

#1B3EA7 #A73E1B #84A71B

monochromatic

#0A173E #122A72 #1B3EA7 #2452DC #587BE4

Accessibility & contrast

On white

9.16

#1B3EA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1B3EA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3EA7

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3EA7	#FFFFFF	#000000	##FFFFFF
##1B3EA7	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAA

Deuteranopia (green-blind)

#0042A5

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b3ea7;
/* rgb */ color: rgb(27, 62, 167);
/* oklch */ color: oklch(41.2% 0.173 265.1);

Tailwind

colors: {
  custom: {
    50: '#7272c2',
    500: '#1b3ea7',
    950: '#000000',
  },
}

SCSS

$custom: #1b3ea7;
$custom-light: #7272c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3ea7",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 167
  },
  "hsl": {
    "h": 225,
    "s": 72.165,
    "l": 38.039
  },
  "oklch": {
    "l": 0.41213,
    "c": 0.17341,
    "h": 265.1
  },
  "luminance": 0.06468
}

Semantic roles & 50–950 ramp

primary

#1B3EA7

secondary

#C8AB56

accent

#C139EF

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B3EA7

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

Preview Lab → · Contrast checker → · Palette generator →