#1B3F93#1B3F93

#1B3F93 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.6% C 0.145 H 263.6°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#1B3F93
RGB	rgb(27, 63, 147)
HSL	hsl(222, 69%, 34%)
HSV	hsv(222, 82%, 58%)
CMYK	cmyk(81.6%, 57.1%, 0%, 42.4%)
CIE-LAB	lab(29.14, 19.82, -49.86)
CIE-LCH	lch(29.14, 53.66, 291.68°)
OKLab	oklab(39.63% -0.0161 -0.1439)
OKLCH	oklch(39.63% 0.145 263.6)
XYZ	xyz(7.4941, 5.8937, 28.3407)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3F93 #936F1B

analogous

#1B7B93 #1B3F93 #331B93

triadic

#1B3F93 #931B3F #3F931B

tetradic

#1B3F93 #931B7B #936F1B #1B9333

square

#1B3F93 #931B7B #936F1B #1B9333

split-complementary

#1B3F93 #93331B #7B931B

monochromatic

#08132C #12295F #1B3F93 #2455C7 #4B77DE

Accessibility & contrast

On white

9.64

#1B3F93 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#1B3F93 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3F93

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3F93	#FFFFFF	#000000	##FFFFFF
##1B3F93	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A96

Deuteranopia (green-blind)

#003F91

Tritanopia (blue-blind)

#005462

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b3f93;
/* rgb */ color: rgb(27, 63, 147);
/* oklch */ color: oklch(39.6% 0.145 263.6);

Tailwind

colors: {
  custom: {
    50: '#6c73b3',
    500: '#1b3f93',
    950: '#000000',
  },
}

SCSS

$custom: #1b3f93;
$custom-light: #6c73b3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3f93",
  "rgb": {
    "r": 27,
    "g": 63,
    "b": 147
  },
  "hsl": {
    "h": 222,
    "s": 68.966,
    "l": 34.118
  },
  "oklch": {
    "l": 0.39625,
    "c": 0.14485,
    "h": 263.6
  },
  "luminance": 0.05895
}

Semantic roles & 50–950 ramp

primary

#1B3F93

secondary

#C09C4A

accent

#B73CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B3F93

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

Preview Lab → · Contrast checker → · Palette generator →