#1B2D61#1B2D61

#1B2D61 is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.4% C 0.095 H 266.6°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D61
RGB	rgb(27, 45, 97)
HSL	hsl(225, 56%, 24%)
HSV	hsv(225, 72%, 38%)
CMYK	cmyk(72.2%, 53.6%, 0%, 62%)
CIE-LAB	lab(19.93, 12.21, -33.11)
CIE-LCH	lch(19.93, 35.29, 290.24°)
OKLab	oklab(31.42% -0.0057 -0.095)
OKLCH	oklch(31.42% 0.095 266.6)
XYZ	xyz(3.5473, 2.9725, 11.6938)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D61 #614F1B

analogous

#1B5061 #1B2D61 #2C1B61

triadic

#1B2D61 #611B2D #2D611B

tetradic

#1B2D61 #611B50 #614F1B #1B612C

square

#1B2D61 #611B50 #614F1B #1B612C

split-complementary

#1B2D61 #612C1B #50611B

monochromatic

#070B18 #0E1731 #1B2D61 #284391 #3659C1

Accessibility & contrast

On white

13.17

#1B2D61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1B2D61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D61

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D61	#FFFFFF	#000000	##FFFFFF
##1B2D61	1.00	13.17	1.59	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F3463

Deuteranopia (green-blind)

#002D60

Tritanopia (blue-blind)

#003942

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b2d61;
/* rgb */ color: rgb(27, 45, 97);
/* oklch */ color: oklch(31.4% 0.095 266.6);

Tailwind

colors: {
  custom: {
    50: '#61658e',
    500: '#1b2d61',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d61;
$custom-light: #61658e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d61",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 97
  },
  "hsl": {
    "h": 224.571,
    "s": 56.452,
    "l": 24.314
  },
  "oklch": {
    "l": 0.31416,
    "c": 0.09518,
    "h": 266.6
  },
  "luminance": 0.02973
}

Semantic roles & 50–950 ramp

primary

#1B2D61

secondary

#978141

accent

#B948E0

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05050C

muted

#7A7A7D

Preview Lab

Preview with #1B2D61

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

Preview Lab → · Contrast checker → · Palette generator →