#1B4E7B#1B4E7B

#1B4E7B is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.4% C 0.093 H 248.8°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E7B
RGB	rgb(27, 78, 123)
HSL	hsl(208, 64%, 29%)
HSV	hsv(208, 78%, 48%)
CMYK	cmyk(78%, 36.6%, 0%, 51.8%)
CIE-LAB	lab(32.06, -0.09, -30.36)
CIE-LCH	lch(32.06, 30.36, 269.83°)
OKLab	oklab(41.35% -0.0335 -0.0863)
OKLCH	oklch(41.35% 0.093 248.8)
XYZ	xyz(6.7502, 7.1111, 19.7519)
Luminance	0.0711 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E7B #7B481B

analogous

#1B7B78 #1B4E7B #1B1E7B

triadic

#1B4E7B #7B1B4E #4E7B1B

tetradic

#1B4E7B #781B7B #7B481B #1E7B1B

square

#1B4E7B #781B7B #7B481B #1E7B1B

split-complementary

#1B4E7B #7B1B1E #7B781B

monochromatic

#061019 #102E49 #1B4E7B #266EAD #3C8DD4

Accessibility & contrast

On white

8.67

#1B4E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#1B4E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E7B

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E7B	#FFFFFF	#000000	##FFFFFF
##1B4E7B	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#39507D

Deuteranopia (green-blind)

#2B477A

Tritanopia (blue-blind)

#00595E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4e7b;
/* rgb */ color: rgb(27, 78, 123);
/* oklch */ color: oklch(41.4% 0.093 248.8);

Tailwind

colors: {
  custom: {
    50: '#667fa1',
    500: '#1b4e7b',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e7b;
$custom-light: #667fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e7b",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 123
  },
  "hsl": {
    "h": 208.125,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.41351,
    "c": 0.09261,
    "h": 248.8
  },
  "luminance": 0.07112
}

Semantic roles & 50–950 ramp

primary

#1B4E7B

secondary

#AF7643

accent

#8F41E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #1B4E7B

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

Preview Lab → · Contrast checker → · Palette generator →