#1B3D96#1B3D96

#1B3D96 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.5% C 0.152 H 264.5°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B3D96
RGB	rgb(27, 61, 150)
HSL	hsl(223, 69%, 35%)
HSV	hsv(223, 82%, 59%)
CMYK	cmyk(82%, 59.3%, 0%, 41.2%)
CIE-LAB	lab(28.83, 22.41, -52.21)
CIE-LCH	lch(28.83, 56.82, 293.23°)
OKLab	oklab(39.47% -0.0146 -0.1509)
OKLCH	oklch(39.47% 0.152 264.5)
XYZ	xyz(7.6238, 5.7716, 29.5605)
Luminance	0.0577 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3D96 #96741B

analogous

#1B7A96 #1B3D96 #371B96

triadic

#1B3D96 #961B3D #3D961B

tetradic

#1B3D96 #961B7A #96741B #1B9637

square

#1B3D96 #961B7A #96741B #1B9637

split-complementary

#1B3D96 #96371B #7A961B

monochromatic

#08132E #122862 #1B3D96 #2452CA #4D75DF

Accessibility & contrast

On white

9.75

#1B3D96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1B3D96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3D96

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3D96	#FFFFFF	#000000	##FFFFFF
##1B3D96	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A99

Deuteranopia (green-blind)

#003E94

Tritanopia (blue-blind)

#005463

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b3d96;
/* rgb */ color: rgb(27, 61, 150);
/* oklch */ color: oklch(39.5% 0.152 264.5);

Tailwind

colors: {
  custom: {
    50: '#6d72b6',
    500: '#1b3d96',
    950: '#000000',
  },
}

SCSS

$custom: #1b3d96;
$custom-light: #6d72b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3d96",
  "rgb": {
    "r": 27,
    "g": 61,
    "b": 150
  },
  "hsl": {
    "h": 223.415,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.39466,
    "c": 0.15159,
    "h": 264.5
  },
  "luminance": 0.05773
}

Semantic roles & 50–950 ramp

primary

#1B3D96

secondary

#C1A14C

accent

#BB3BEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3D96

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

Preview Lab → · Contrast checker → · Palette generator →