#1B3A96#1B3A96

#1B3A96 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.9% C 0.155 H 265.3°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#1B3A96
RGB	rgb(27, 58, 150)
HSL	hsl(225, 69%, 35%)
HSV	hsv(225, 82%, 59%)
CMYK	cmyk(82%, 61.3%, 0%, 41.2%)
CIE-LAB	lab(28.01, 24.47, -53.55)
CIE-LCH	lch(28.01, 58.88, 294.55°)
OKLab	oklab(38.85% -0.0127 -0.1549)
OKLCH	oklch(38.85% 0.155 265.3)
XYZ	xyz(7.4681, 5.4602, 29.5086)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3A96 #96771B

analogous

#1B7896 #1B3A96 #391B96

triadic

#1B3A96 #961B3A #3A961B

tetradic

#1B3A96 #961B78 #96771B #1B9639

square

#1B3A96 #961B78 #96771B #1B9639

split-complementary

#1B3A96 #96391B #78961B

monochromatic

#08122E #122662 #1B3A96 #244ECA #4D71DF

Accessibility & contrast

On white

10.04

#1B3A96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1B3A96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3A96

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3A96	#FFFFFF	#000000	##FFFFFF
##1B3A96	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004899

Deuteranopia (green-blind)

#003D94

Tritanopia (blue-blind)

#005262

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b3a96;
/* rgb */ color: rgb(27, 58, 150);
/* oklch */ color: oklch(38.9% 0.155 265.3);

Tailwind

colors: {
  custom: {
    50: '#6e6fb6',
    500: '#1b3a96',
    950: '#000000',
  },
}

SCSS

$custom: #1b3a96;
$custom-light: #6e6fb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3a96",
  "rgb": {
    "r": 27,
    "g": 58,
    "b": 150
  },
  "hsl": {
    "h": 224.878,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.38852,
    "c": 0.15538,
    "h": 265.3
  },
  "luminance": 0.05461
}

Semantic roles & 50–950 ramp

primary

#1B3A96

secondary

#C1A34C

accent

#C03BEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3A96

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

Preview Lab → · Contrast checker → · Palette generator →