#1B4A8B#1B4A8B

#1B4A8B is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.5% C 0.120 H 257.5°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A8B
RGB	rgb(27, 74, 139)
HSL	hsl(215, 67%, 33%)
HSV	hsv(215, 81%, 55%)
CMYK	cmyk(80.6%, 46.8%, 0%, 45.5%)
CIE-LAB	lab(31.79, 9.02, -40.67)
CIE-LCH	lch(31.79, 41.66, 282.50°)
OKLab	oklab(41.46% -0.0258 -0.1167)
OKLCH	oklch(41.46% 0.12 257.5)
XYZ	xyz(7.5593, 6.9938, 25.3726)
Luminance	0.0699 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A8B #8B5C1B

analogous

#1B828B #1B4A8B #241B8B

triadic

#1B4A8B #8B1B4A #4A8B1B

tetradic

#1B4A8B #8B1B82 #8B5C1B #1B8B24

square

#1B4A8B #8B1B82 #8B5C1B #1B8B24

split-complementary

#1B4A8B #8B241B #828B1B

monochromatic

#071325 #112F58 #1B4A8B #2565BE #4584DB

Accessibility & contrast

On white

8.75

#1B4A8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1B4A8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A8B

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A8B	#FFFFFF	#000000	##FFFFFF
##1B4A8B	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28508D

Deuteranopia (green-blind)

#0D468A

Tritanopia (blue-blind)

#005963

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4a8b;
/* rgb */ color: rgb(27, 74, 139);
/* oklch */ color: oklch(41.5% 0.120 257.5);

Tailwind

colors: {
  custom: {
    50: '#6a7cad',
    500: '#1b4a8b',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a8b;
$custom-light: #6a7cad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a8b",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 139
  },
  "hsl": {
    "h": 214.821,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.41463,
    "c": 0.11952,
    "h": 257.5
  },
  "luminance": 0.06995
}

Semantic roles & 50–950 ramp

primary

#1B4A8B

secondary

#BC8A45

accent

#A23DEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4A8B

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

Preview Lab → · Contrast checker → · Palette generator →