#1B4D8A#1B4D8A

#1B4D8A is a dark, moderate cyan. Relative luminance 0.074; OKLCH L 42.1% C 0.114 H 255.5°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D8A
RGB	rgb(27, 77, 138)
HSL	hsl(213, 67%, 32%)
HSV	hsv(213, 80%, 54%)
CMYK	cmyk(80.4%, 44.2%, 0%, 45.9%)
CIE-LAB	lab(32.65, 6.59, -38.69)
CIE-LCH	lch(32.65, 39.25, 279.67°)
OKLab	oklab(42.1% -0.0287 -0.1108)
OKLCH	oklch(42.1% 0.114 255.5)
XYZ	xyz(7.6916, 7.3748, 25.0579)
Luminance	0.0738 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D8A #8A581B

analogous

#1B858A #1B4D8A #201B8A

triadic

#1B4D8A #8A1B4D #4D8A1B

tetradic

#1B4D8A #8A1B85 #8A581B #1B8A20

square

#1B4D8A #8A1B85 #8A581B #1B8A20

split-complementary

#1B4D8A #8A201B #858A1B

monochromatic

#071424 #113057 #1B4D8A #256ABD #4588DB

Accessibility & contrast

On white

8.48

#1B4D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1B4D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D8A

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D8A	#FFFFFF	#000000	##FFFFFF
##1B4D8A	1.00	8.48	2.48	8.48
#FFFFFF	8.48	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E528C

Deuteranopia (green-blind)

#194889

Tritanopia (blue-blind)

#005B64

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4d8a;
/* rgb */ color: rgb(27, 77, 138);
/* oklch */ color: oklch(42.1% 0.114 255.5);

Tailwind

colors: {
  custom: {
    50: '#6a7eac',
    500: '#1b4d8a',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d8a;
$custom-light: #6a7eac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d8a",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 138
  },
  "hsl": {
    "h": 212.973,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.42102,
    "c": 0.11446,
    "h": 255.5
  },
  "luminance": 0.07376
}

Semantic roles & 50–950 ramp

primary

#1B4D8A

secondary

#BC8645

accent

#9C3EEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4D8A

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

Preview Lab → · Contrast checker → · Palette generator →