#1B3EA8#1B3EA8

#1B3EA8 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.175 H 265.1°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#1B3EA8
RGB	rgb(27, 62, 168)
HSL	hsl(225, 72%, 38%)
HSV	hsv(225, 84%, 66%)
CMYK	cmyk(83.9%, 63.1%, 0%, 34.1%)
CIE-LAB	lab(30.65, 28.82, -60.14)
CIE-LCH	lch(30.65, 66.69, 295.61°)
OKLab	oklab(41.31% -0.0148 -0.1741)
OKLCH	oklch(41.31% 0.175 265.1)
XYZ	xyz(9.2400, 6.5043, 37.8067)
Luminance	0.0650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3EA8 #A8851B

analogous

#1B85A8 #1B3EA8 #3E1BA8

triadic

#1B3EA8 #A81B3E #3EA81B

tetradic

#1B3EA8 #A81B85 #A8851B #1BA83E

square

#1B3EA8 #A81B85 #A8851B #1BA83E

split-complementary

#1B3EA8 #A83E1B #85A81B

monochromatic

#0A173F #132B73 #1B3EA8 #2452DC #597CE4

Accessibility & contrast

On white

9.13

#1B3EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1B3EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3EA8

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3EA8	#FFFFFF	#000000	##FFFFFF
##1B3EA8	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAB

Deuteranopia (green-blind)

#0042A6

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b3ea8;
/* rgb */ color: rgb(27, 62, 168);
/* oklch */ color: oklch(41.3% 0.175 265.1);

Tailwind

colors: {
  custom: {
    50: '#7272c3',
    500: '#1b3ea8',
    950: '#000000',
  },
}

SCSS

$custom: #1b3ea8;
$custom-light: #7272c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3ea8",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 168
  },
  "hsl": {
    "h": 225.106,
    "s": 72.308,
    "l": 38.235
  },
  "oklch": {
    "l": 0.41306,
    "c": 0.17474,
    "h": 265.1
  },
  "luminance": 0.06505
}

Semantic roles & 50–950 ramp

primary

#1B3EA8

secondary

#C8AC57

accent

#C239EF

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#090813

muted

#7B7B82

Preview Lab

Preview with #1B3EA8

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

Preview Lab → · Contrast checker → · Palette generator →