#1B3A94#1B3A94

#1B3A94 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.153 H 265.2°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#1B3A94
RGB	rgb(27, 58, 148)
HSL	hsl(225, 69%, 34%)
HSV	hsv(225, 82%, 58%)
CMYK	cmyk(81.8%, 60.8%, 0%, 42%)
CIE-LAB	lab(27.84, 23.67, -52.61)
CIE-LCH	lch(27.84, 57.69, 294.23°)
OKLab	oklab(38.67% -0.0127 -0.1521)
OKLCH	oklch(38.67% 0.153 265.2)
XYZ	xyz(7.3085, 5.3964, 28.6676)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3A94 #94751B

analogous

#1B7794 #1B3A94 #391B94

triadic

#1B3A94 #941B3A #3A941B

tetradic

#1B3A94 #941B77 #94751B #1B9439

square

#1B3A94 #941B77 #94751B #1B9439

split-complementary

#1B3A94 #94391B #77941B

monochromatic

#08112C #122660 #1B3A94 #244EC8 #4B71DE

Accessibility & contrast

On white

10.10

#1B3A94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1B3A94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3A94

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3A94	#FFFFFF	#000000	##FFFFFF
##1B3A94	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004897

Deuteranopia (green-blind)

#003C92

Tritanopia (blue-blind)

#005161

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b3a94;
/* rgb */ color: rgb(27, 58, 148);
/* oklch */ color: oklch(38.7% 0.153 265.2);

Tailwind

colors: {
  custom: {
    50: '#6d6fb4',
    500: '#1b3a94',
    950: '#000000',
  },
}

SCSS

$custom: #1b3a94;
$custom-light: #6d6fb4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3a94",
  "rgb": {
    "r": 27,
    "g": 58,
    "b": 148
  },
  "hsl": {
    "h": 224.628,
    "s": 69.143,
    "l": 34.314
  },
  "oklch": {
    "l": 0.3867,
    "c": 0.15262,
    "h": 265.2
  },
  "luminance": 0.05397
}

Semantic roles & 50–950 ramp

primary

#1B3A94

secondary

#C0A24B

accent

#BF3CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3A94

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

Preview Lab → · Contrast checker → · Palette generator →