#1B2D75#1B2D75

#1B2D75 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.1% C 0.125 H 268.0°. Best body text is #FFFFFF at 12.51:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D75
RGB	rgb(27, 45, 117)
HSL	hsl(228, 63%, 28%)
HSV	hsv(228, 77%, 46%)
CMYK	cmyk(76.9%, 61.5%, 0%, 54.1%)
CIE-LAB	lab(21.56, 20.34, -43.44)
CIE-LCH	lch(21.56, 47.97, 295.08°)
OKLab	oklab(33.15% -0.0043 -0.1254)
OKLCH	oklch(33.15% 0.125 268)
XYZ	xyz(4.6002, 3.3936, 17.2388)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D75 #75631B

analogous

#1B5A75 #1B2D75 #361B75

triadic

#1B2D75 #751B2D #2D751B

tetradic

#1B2D75 #751B5A #75631B #1B7536

square

#1B2D75 #751B5A #75631B #1B7536

split-complementary

#1B2D75 #75361B #5A751B

monochromatic

#060A19 #101A43 #1B2D75 #2640A7 #3958D1

Accessibility & contrast

On white

12.51

#1B2D75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B2D75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D75

12.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D75	#FFFFFF	#000000	##FFFFFF
##1B2D75	1.00	12.51	1.68	12.51
#FFFFFF	12.51	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003877

Deuteranopia (green-blind)

#003074

Tritanopia (blue-blind)

#003F4C

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2d75;
/* rgb */ color: rgb(27, 45, 117);
/* oklch */ color: oklch(33.1% 0.125 268.0);

Tailwind

colors: {
  custom: {
    50: '#66659d',
    500: '#1b2d75',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d75;
$custom-light: #66659d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d75",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 117
  },
  "hsl": {
    "h": 228,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.3315,
    "c": 0.12546,
    "h": 268
  },
  "luminance": 0.03394
}

Semantic roles & 50–950 ramp

primary

#1B2D75

secondary

#A99542

accent

#C542E6

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050E

muted

#7A7A7E

Preview Lab

Preview with #1B2D75

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

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