#1B2D4F#1B2D4F

#1B2D4F is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.1% C 0.066 H 262.1°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D4F
RGB	rgb(27, 45, 79)
HSL	hsl(219, 49%, 21%)
HSV	hsv(219, 66%, 31%)
CMYK	cmyk(65.8%, 43%, 0%, 69%)
CIE-LAB	lab(18.69, 4.93, -23.13)
CIE-LCH	lch(18.69, 23.65, 282.02°)
OKLab	oklab(30.06% -0.0091 -0.0657)
OKLCH	oklch(30.06% 0.066 262.1)
XYZ	xyz(2.8012, 2.6741, 7.7641)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D4F #4F3D1B

analogous

#1B474F #1B2D4F #231B4F

triadic

#1B2D4F #4F1B2D #2D4F1B

tetradic

#1B2D4F #4F1B47 #4F3D1B #1B4F23

square

#1B2D4F #4F1B47 #4F3D1B #1B4F23

split-complementary

#1B2D4F #4F231B #474F1B

monochromatic

#080D17 #0B1321 #1B2D4F #2B477D #3A61AA

Accessibility & contrast

On white

13.68

#1B2D4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1B2D4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D4F

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D4F	#FFFFFF	#000000	##FFFFFF
##1B2D4F	1.00	13.68	1.53	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E3050

Deuteranopia (green-blind)

#172B4E

Tritanopia (blue-blind)

#00353A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b2d4f;
/* rgb */ color: rgb(27, 45, 79);
/* oklch */ color: oklch(30.1% 0.066 262.1);

Tailwind

colors: {
  custom: {
    50: '#5d6580',
    500: '#1b2d4f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d4f;
$custom-light: #5d6580;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d4f",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 79
  },
  "hsl": {
    "h": 219.231,
    "s": 49.057,
    "l": 20.784
  },
  "oklch": {
    "l": 0.30059,
    "c": 0.06631,
    "h": 262.1
  },
  "luminance": 0.02674
}

Semantic roles & 50–950 ramp

primary

#1B2D4F

secondary

#856D41

accent

#A94FD9

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04050A

muted

#797A7C

Preview Lab

Preview with #1B2D4F

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

Preview Lab → · Contrast checker → · Palette generator →