#1B3E86#1B3E86

#1B3E86 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.3% C 0.128 H 262.5°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E86
RGB	rgb(27, 62, 134)
HSL	hsl(220, 66%, 32%)
HSV	hsv(220, 80%, 53%)
CMYK	cmyk(79.9%, 53.7%, 0%, 47.5%)
CIE-LAB	lab(27.84, 15.25, -43.95)
CIE-LCH	lch(27.84, 46.52, 289.13°)
OKLab	oklab(38.32% -0.0166 -0.1266)
OKLCH	oklch(38.32% 0.128 262.5)
XYZ	xyz(6.4762, 5.3987, 23.2504)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E86 #86631B

analogous

#1B7486 #1B3E86 #2E1B86

triadic

#1B3E86 #861B3E #3E861B

tetradic

#1B3E86 #861B74 #86631B #1B862E

square

#1B3E86 #861B74 #86631B #1B862E

split-complementary

#1B3E86 #862E1B #74861B

monochromatic

#060F20 #112653 #1B3E86 #2556B9 #4274D9

Accessibility & contrast

On white

10.10

#1B3E86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1B3E86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E86

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E86	#FFFFFF	#000000	##FFFFFF
##1B3E86	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4789

Deuteranopia (green-blind)

#003D85

Tritanopia (blue-blind)

#004F5B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b3e86;
/* rgb */ color: rgb(27, 62, 134);
/* oklch */ color: oklch(38.3% 0.128 262.5);

Tailwind

colors: {
  custom: {
    50: '#6972aa',
    500: '#1b3e86',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e86;
$custom-light: #6972aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e86",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 134
  },
  "hsl": {
    "h": 220.374,
    "s": 66.46,
    "l": 31.569
  },
  "oklch": {
    "l": 0.3832,
    "c": 0.12768,
    "h": 262.5
  },
  "luminance": 0.05399
}

Semantic roles & 50–950 ramp

primary

#1B3E86

secondary

#B99344

accent

#B13EE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1B3E86

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

Preview Lab → · Contrast checker → · Palette generator →