#1B4E78#1B4E78

#1B4E78 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.2% C 0.089 H 247.1°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E78
RGB	rgb(27, 78, 120)
HSL	hsl(207, 63%, 29%)
HSV	hsv(207, 78%, 47%)
CMYK	cmyk(77.5%, 35%, 0%, 52.9%)
CIE-LAB	lab(31.89, -1.28, -28.75)
CIE-LCH	lch(31.89, 28.78, 267.46°)
OKLab	oklab(41.17% -0.0344 -0.0816)
OKLCH	oklch(41.17% 0.089 247.1)
XYZ	xyz(6.5653, 7.0371, 18.7779)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E78 #78451B

analogous

#1B7874 #1B4E78 #1B2078

triadic

#1B4E78 #781B4E #4E781B

tetradic

#1B4E78 #741B78 #78451B #20781B

square

#1B4E78 #741B78 #78451B #20781B

split-complementary

#1B4E78 #781B20 #78741B

monochromatic

#061019 #102E46 #1B4E78 #266EAA #3B8ED3

Accessibility & contrast

On white

8.72

#1B4E78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1B4E78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E78

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E78	#FFFFFF	#000000	##FFFFFF
##1B4E78	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B507A

Deuteranopia (green-blind)

#2D4777

Tritanopia (blue-blind)

#00585D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4e78;
/* rgb */ color: rgb(27, 78, 120);
/* oklch */ color: oklch(41.2% 0.089 247.1);

Tailwind

colors: {
  custom: {
    50: '#667f9f',
    500: '#1b4e78',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e78;
$custom-light: #667f9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e78",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 120
  },
  "hsl": {
    "h": 207.097,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.41165,
    "c": 0.08861,
    "h": 247.1
  },
  "luminance": 0.07038
}

Semantic roles & 50–950 ramp

primary

#1B4E78

secondary

#AC7243

accent

#8C41E6

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4E78

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

Preview Lab → · Contrast checker → · Palette generator →