#1B2E53#1B2E53

#1B2E53 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.6% C 0.071 H 262.4°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B2E53
RGB	rgb(27, 46, 83)
HSL	hsl(220, 51%, 22%)
HSV	hsv(220, 67%, 33%)
CMYK	cmyk(67.5%, 44.6%, 0%, 67.5%)
CIE-LAB	lab(19.27, 5.80, -24.89)
CIE-LCH	lch(19.27, 25.56, 283.12°)
OKLab	oklab(30.59% -0.0094 -0.0708)
OKLCH	oklch(30.59% 0.071 262.4)
XYZ	xyz(2.9898, 2.8113, 8.5670)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2E53 #53401B

analogous

#1B4A53 #1B2E53 #241B53

triadic

#1B2E53 #531B2E #2E531B

tetradic

#1B2E53 #531B4A #53401B #1B5324

square

#1B2E53 #531B4A #53401B #1B5324

split-complementary

#1B2E53 #53241B #4A531B

monochromatic

#080D17 #0C1425 #1B2E53 #2A4881 #3961AF

Accessibility & contrast

On white

13.44

#1B2E53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B2E53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2E53

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2E53	#FFFFFF	#000000	##FFFFFF
##1B2E53	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E3254

Deuteranopia (green-blind)

#162C52

Tritanopia (blue-blind)

#00363C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2e53;
/* rgb */ color: rgb(27, 46, 83);
/* oklch */ color: oklch(30.6% 0.071 262.4);

Tailwind

colors: {
  custom: {
    50: '#5e6683',
    500: '#1b2e53',
    950: '#000000',
  },
}

SCSS

$custom: #1b2e53;
$custom-light: #5e6683;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2e53",
  "rgb": {
    "r": 27,
    "g": 46,
    "b": 83
  },
  "hsl": {
    "h": 219.643,
    "s": 50.909,
    "l": 21.569
  },
  "oklch": {
    "l": 0.30593,
    "c": 0.07144,
    "h": 262.4
  },
  "luminance": 0.02812
}

Semantic roles & 50–950 ramp

primary

#1B2E53

secondary

#897041

accent

#AB4DDA

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05050A

muted

#797A7C

Preview Lab

Preview with #1B2E53

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

Preview Lab → · Contrast checker → · Palette generator →