#1B4074#1B4074

#1B4074 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.4% C 0.099 H 257.5°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B4074
RGB	rgb(27, 64, 116)
HSL	hsl(215, 62%, 28%)
HSV	hsv(215, 77%, 45%)
CMYK	cmyk(76.7%, 44.8%, 0%, 54.5%)
CIE-LAB	lab(27.19, 6.50, -33.72)
CIE-LCH	lch(27.19, 34.34, 280.91°)
OKLab	oklab(37.41% -0.0214 -0.0964)
OKLCH	oklch(37.41% 0.099 257.5)
XYZ	xyz(5.4366, 5.1602, 17.2291)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4074 #744F1B

analogous

#1B6C74 #1B4074 #221B74

triadic

#1B4074 #741B40 #40741B

tetradic

#1B4074 #741B6C #744F1B #1B7422

square

#1B4074 #741B6C #744F1B #1B7422

split-complementary

#1B4074 #74221B #6C741B

monochromatic

#060E19 #0F2542 #1B4074 #275BA6 #3978D1

Accessibility & contrast

On white

10.33

#1B4074 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1B4074 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4074

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4074	#FFFFFF	#000000	##FFFFFF
##1B4074	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274576

Deuteranopia (green-blind)

#173C73

Tritanopia (blue-blind)

#004C54

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b4074;
/* rgb */ color: rgb(27, 64, 116);
/* oklch */ color: oklch(37.4% 0.099 257.5);

Tailwind

colors: {
  custom: {
    50: '#65749c',
    500: '#1b4074',
    950: '#000000',
  },
}

SCSS

$custom: #1b4074;
$custom-light: #65749c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4074",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 116
  },
  "hsl": {
    "h": 215.056,
    "s": 62.238,
    "l": 28.039
  },
  "oklch": {
    "l": 0.37412,
    "c": 0.09879,
    "h": 257.5
  },
  "luminance": 0.05161
}

Semantic roles & 50–950 ramp

primary

#1B4074

secondary

#A97E42

accent

#A242E5

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1B4074

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

Preview Lab → · Contrast checker → · Palette generator →