#1B4593#1B4593

#1B4593 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.9% C 0.137 H 261.4°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B4593
RGB	rgb(27, 69, 147)
HSL	hsl(219, 69%, 34%)
HSV	hsv(219, 82%, 58%)
CMYK	cmyk(81.6%, 53.1%, 0%, 42.4%)
CIE-LAB	lab(30.87, 15.69, -47.07)
CIE-LCH	lch(30.87, 49.61, 288.43°)
OKLab	oklab(40.93% -0.0205 -0.1356)
OKLCH	oklch(40.93% 0.137 261.4)
XYZ	xyz(7.8447, 6.5949, 28.4576)
Luminance	0.0660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4593 #93691B

analogous

#1B8193 #1B4593 #2D1B93

triadic

#1B4593 #931B45 #45931B

tetradic

#1B4593 #931B81 #93691B #1B932D

square

#1B4593 #931B81 #93691B #1B932D

split-complementary

#1B4593 #932D1B #81931B

monochromatic

#08142C #122D5F #1B4593 #245DC7 #4B7EDE

Accessibility & contrast

On white

9.05

#1B4593 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1B4593 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4593

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4593	#FFFFFF	#000000	##FFFFFF
##1B4593	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4E96

Deuteranopia (green-blind)

#004391

Tritanopia (blue-blind)

#005865

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4593;
/* rgb */ color: rgb(27, 69, 147);
/* oklch */ color: oklch(40.9% 0.137 261.4);

Tailwind

colors: {
  custom: {
    50: '#6c78b3',
    500: '#1b4593',
    950: '#000000',
  },
}

SCSS

$custom: #1b4593;
$custom-light: #6c78b3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4593",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 147
  },
  "hsl": {
    "h": 219,
    "s": 68.966,
    "l": 34.118
  },
  "oklch": {
    "l": 0.40932,
    "c": 0.13716,
    "h": 261.4
  },
  "luminance": 0.06596
}

Semantic roles & 50–950 ramp

primary

#1B4593

secondary

#C0974A

accent

#AE3CEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4593

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

Preview Lab → · Contrast checker → · Palette generator →