#1B2D63#1B2D63

#1B2D63 is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.6% C 0.098 H 266.8°. Best body text is #FFFFFF at 13.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D63
RGB	rgb(27, 45, 99)
HSL	hsl(225, 57%, 25%)
HSV	hsv(225, 73%, 39%)
CMYK	cmyk(72.7%, 54.5%, 0%, 61.2%)
CIE-LAB	lab(20.09, 13.02, -34.18)
CIE-LCH	lch(20.09, 36.58, 290.86°)
OKLab	oklab(31.58% -0.0055 -0.0981)
OKLCH	oklch(31.58% 0.098 266.8)
XYZ	xyz(3.6417, 3.0103, 12.1911)
Luminance	0.0301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D63 #63511B

analogous

#1B5163 #1B2D63 #2D1B63

triadic

#1B2D63 #631B2D #2D631B

tetradic

#1B2D63 #631B51 #63511B #1B632D

square

#1B2D63 #631B51 #63511B #1B632D

split-complementary

#1B2D63 #632D1B #51631B

monochromatic

#070B18 #0E1733 #1B2D63 #284393 #3559C3

Accessibility & contrast

On white

13.11

#1B2D63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1B2D63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D63

13.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D63	#FFFFFF	#000000	##FFFFFF
##1B2D63	1.00	13.11	1.60	13.11
#FFFFFF	13.11	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C3465

Deuteranopia (green-blind)

#002D62

Tritanopia (blue-blind)

#003A43

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b2d63;
/* rgb */ color: rgb(27, 45, 99);
/* oklch */ color: oklch(31.6% 0.098 266.8);

Tailwind

colors: {
  custom: {
    50: '#616590',
    500: '#1b2d63',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d63;
$custom-light: #616590;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d63",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 99
  },
  "hsl": {
    "h": 225,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.31579,
    "c": 0.0983,
    "h": 266.8
  },
  "luminance": 0.03011
}

Semantic roles & 50–950 ramp

primary

#1B2D63

secondary

#988341

accent

#BA47E0

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05050C

muted

#7A7A7D

Preview Lab

Preview with #1B2D63

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

Preview Lab → · Contrast checker → · Palette generator →