#1B3D94#1B3D94

#1B3D94 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.149 H 264.3°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#1B3D94
RGB	rgb(27, 61, 148)
HSL	hsl(223, 69%, 34%)
HSV	hsv(223, 82%, 58%)
CMYK	cmyk(81.8%, 58.8%, 0%, 42%)
CIE-LAB	lab(28.66, 21.60, -51.26)
CIE-LCH	lch(28.66, 55.63, 292.85°)
OKLab	oklab(39.29% -0.0147 -0.1481)
OKLCH	oklch(39.29% 0.149 264.3)
XYZ	xyz(7.4641, 5.7077, 28.7195)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3D94 #94721B

analogous

#1B7A94 #1B3D94 #351B94

triadic

#1B3D94 #941B3D #3D941B

tetradic

#1B3D94 #941B7A #94721B #1B9435

square

#1B3D94 #941B7A #94721B #1B9435

split-complementary

#1B3D94 #94351B #7A941B

monochromatic

#08122C #122860 #1B3D94 #2452C8 #4B75DE

Accessibility & contrast

On white

9.80

#1B3D94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1B3D94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3D94

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3D94	#FFFFFF	#000000	##FFFFFF
##1B3D94	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004997

Deuteranopia (green-blind)

#003E92

Tritanopia (blue-blind)

#005362

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b3d94;
/* rgb */ color: rgb(27, 61, 148);
/* oklch */ color: oklch(39.3% 0.149 264.3);

Tailwind

colors: {
  custom: {
    50: '#6d72b4',
    500: '#1b3d94',
    950: '#000000',
  },
}

SCSS

$custom: #1b3d94;
$custom-light: #6d72b4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3d94",
  "rgb": {
    "r": 27,
    "g": 61,
    "b": 148
  },
  "hsl": {
    "h": 223.14,
    "s": 69.143,
    "l": 34.314
  },
  "oklch": {
    "l": 0.3929,
    "c": 0.14882,
    "h": 264.3
  },
  "luminance": 0.05709
}

Semantic roles & 50–950 ramp

primary

#1B3D94

secondary

#C09F4B

accent

#BA3CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3D94

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

Preview Lab → · Contrast checker → · Palette generator →