#1B3F94#1B3F94

#1B3F94 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.7% C 0.146 H 263.7°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#1B3F94
RGB	rgb(27, 63, 148)
HSL	hsl(222, 69%, 34%)
HSV	hsv(222, 82%, 58%)
CMYK	cmyk(81.8%, 57.4%, 0%, 42%)
CIE-LAB	lab(29.22, 20.23, -50.35)
CIE-LCH	lch(29.22, 54.26, 291.89°)
OKLab	oklab(39.71% -0.0161 -0.1454)
OKLCH	oklch(39.71% 0.146 263.7)
XYZ	xyz(7.5729, 5.9252, 28.7558)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3F94 #94701B

analogous

#1B7C94 #1B3F94 #341B94

triadic

#1B3F94 #941B3F #3F941B

tetradic

#1B3F94 #941B7C #94701B #1B9434

square

#1B3F94 #941B7C #94701B #1B9434

split-complementary

#1B3F94 #94341B #7C941B

monochromatic

#08132C #122960 #1B3F94 #2455C8 #4B77DE

Accessibility & contrast

On white

9.61

#1B3F94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1B3F94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3F94

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3F94	#FFFFFF	#000000	##FFFFFF
##1B3F94	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B97

Deuteranopia (green-blind)

#004092

Tritanopia (blue-blind)

#005463

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b3f94;
/* rgb */ color: rgb(27, 63, 148);
/* oklch */ color: oklch(39.7% 0.146 263.7);

Tailwind

colors: {
  custom: {
    50: '#6d73b4',
    500: '#1b3f94',
    950: '#000000',
  },
}

SCSS

$custom: #1b3f94;
$custom-light: #6d73b4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3f94",
  "rgb": {
    "r": 27,
    "g": 63,
    "b": 148
  },
  "hsl": {
    "h": 222.149,
    "s": 69.143,
    "l": 34.314
  },
  "oklch": {
    "l": 0.39711,
    "c": 0.14626,
    "h": 263.7
  },
  "luminance": 0.05926
}

Semantic roles & 50–950 ramp

primary

#1B3F94

secondary

#C09D4B

accent

#B83CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B3F94

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

Preview Lab → · Contrast checker → · Palette generator →