#1B3D93#1B3D93

#1B3D93 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.2% C 0.147 H 264.3°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#1B3D93
RGB	rgb(27, 61, 147)
HSL	hsl(223, 69%, 34%)
HSV	hsv(223, 82%, 58%)
CMYK	cmyk(81.6%, 58.5%, 0%, 42.4%)
CIE-LAB	lab(28.58, 21.20, -50.78)
CIE-LCH	lch(28.58, 55.03, 292.66°)
OKLab	oklab(39.2% -0.0147 -0.1467)
OKLCH	oklch(39.2% 0.147 264.3)
XYZ	xyz(7.3853, 5.6762, 28.3045)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3D93 #93711B

analogous

#1B7993 #1B3D93 #351B93

triadic

#1B3D93 #931B3D #3D931B

tetradic

#1B3D93 #931B79 #93711B #1B9335

square

#1B3D93 #931B79 #93711B #1B9335

split-complementary

#1B3D93 #93351B #79931B

monochromatic

#08122C #12285F #1B3D93 #2452C7 #4B74DE

Accessibility & contrast

On white

9.83

#1B3D93 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1B3D93 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3D93

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3D93	#FFFFFF	#000000	##FFFFFF
##1B3D93	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004996

Deuteranopia (green-blind)

#003E91

Tritanopia (blue-blind)

#005362

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b3d93;
/* rgb */ color: rgb(27, 61, 147);
/* oklch */ color: oklch(39.2% 0.147 264.3);

Tailwind

colors: {
  custom: {
    50: '#6d72b3',
    500: '#1b3d93',
    950: '#000000',
  },
}

SCSS

$custom: #1b3d93;
$custom-light: #6d72b3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3d93",
  "rgb": {
    "r": 27,
    "g": 61,
    "b": 147
  },
  "hsl": {
    "h": 223,
    "s": 68.966,
    "l": 34.118
  },
  "oklch": {
    "l": 0.39202,
    "c": 0.14742,
    "h": 264.3
  },
  "luminance": 0.05677
}

Semantic roles & 50–950 ramp

primary

#1B3D93

secondary

#C09E4A

accent

#BA3CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3D93

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

Preview Lab → · Contrast checker → · Palette generator →