#1B4F80#1B4F80

#1B4F80 is a dark, moderate cyan. Relative luminance 0.074; OKLCH L 41.9% C 0.098 H 250.4°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F80
RGB	rgb(27, 79, 128)
HSL	hsl(209, 65%, 30%)
HSV	hsv(209, 79%, 50%)
CMYK	cmyk(78.9%, 38.3%, 0%, 49.8%)
CIE-LAB	lab(32.66, 1.25, -32.50)
CIE-LCH	lch(32.66, 32.53, 272.19°)
OKLab	oklab(41.92% -0.0331 -0.0926)
OKLCH	oklch(41.92% 0.098 250.4)
XYZ	xyz(7.1428, 7.3827, 21.4664)
Luminance	0.0738 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F80 #804C1B

analogous

#1B807E #1B4F80 #1B1C80

triadic

#1B4F80 #801B4F #4F801B

tetradic

#1B4F80 #7E1B80 #804C1B #1C801B

square

#1B4F80 #7E1B80 #804C1B #1C801B

split-complementary

#1B4F80 #801B1C #807E1B

monochromatic

#06111B #10304D #1B4F80 #266EB3 #3F8DD6

Accessibility & contrast

On white

8.48

#1B4F80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1B4F80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F80

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F80	#FFFFFF	#000000	##FFFFFF
##1B4F80	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)

#385282

Deuteranopia (green-blind)

#29497F

Tritanopia (blue-blind)

#005B61

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4f80;
/* rgb */ color: rgb(27, 79, 128);
/* oklch */ color: oklch(41.9% 0.098 250.4);

Tailwind

colors: {
  custom: {
    50: '#6780a5',
    500: '#1b4f80',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f80;
$custom-light: #6780a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f80",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 128
  },
  "hsl": {
    "h": 209.109,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.41919,
    "c": 0.09832,
    "h": 250.4
  },
  "luminance": 0.07383
}

Semantic roles & 50–950 ramp

primary

#1B4F80

secondary

#B47A43

accent

#9140E8

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B4F80

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

Preview Lab → · Contrast checker → · Palette generator →