#1B4073#1B4073

#1B4073 is a dark, moderate cyan. Relative luminance 0.051; OKLCH L 37.3% C 0.097 H 257.2°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B4073
RGB	rgb(27, 64, 115)
HSL	hsl(215, 62%, 28%)
HSV	hsv(215, 77%, 45%)
CMYK	cmyk(76.5%, 44.3%, 0%, 54.9%)
CIE-LAB	lab(27.12, 6.09, -33.19)
CIE-LCH	lch(27.12, 33.74, 280.41°)
OKLab	oklab(37.34% -0.0216 -0.0949)
OKLCH	oklch(37.34% 0.097 257.2)
XYZ	xyz(5.3788, 5.1370, 16.9244)
Luminance	0.0514 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4073 #734E1B

analogous

#1B6C73 #1B4073 #221B73

triadic

#1B4073 #731B40 #40731B

tetradic

#1B4073 #731B6C #734E1B #1B7322

square

#1B4073 #731B6C #734E1B #1B7322

split-complementary

#1B4073 #73221B #6C731B

monochromatic

#060E19 #0F2441 #1B4073 #275CA5 #3878D0

Accessibility & contrast

On white

10.36

#1B4073 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1B4073 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4073

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4073	#FFFFFF	#000000	##FFFFFF
##1B4073	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274475

Deuteranopia (green-blind)

#183C72

Tritanopia (blue-blind)

#004C54

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b4073;
/* rgb */ color: rgb(27, 64, 115);
/* oklch */ color: oklch(37.3% 0.097 257.2);

Tailwind

colors: {
  custom: {
    50: '#64749b',
    500: '#1b4073',
    950: '#000000',
  },
}

SCSS

$custom: #1b4073;
$custom-light: #64749b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4073",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 115
  },
  "hsl": {
    "h": 214.773,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.37341,
    "c": 0.09731,
    "h": 257.2
  },
  "luminance": 0.05138
}

Semantic roles & 50–950 ramp

primary

#1B4073

secondary

#A87D42

accent

#A143E5

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1B4073

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

Preview Lab → · Contrast checker → · Palette generator →