#1B306C#1B306C

#1B306C is a dark, moderate blue. Relative luminance 0.034; OKLCH L 33.0% C 0.108 H 266.1°. Best body text is #FFFFFF at 12.46:1 contrast (WCAG AA passes).

Color values

HEX	#1B306C
RGB	rgb(27, 48, 108)
HSL	hsl(224, 60%, 26%)
HSV	hsv(224, 75%, 42%)
CMYK	cmyk(75%, 55.6%, 0%, 57.6%)
CIE-LAB	lab(21.69, 14.53, -37.45)
CIE-LCH	lch(21.69, 40.17, 291.21°)
OKLab	oklab(33.01% -0.0074 -0.1077)
OKLCH	oklch(33.01% 0.108 266.1)
XYZ	xyz(4.2148, 3.4292, 14.6242)
Luminance	0.0343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B306C #6C571B

analogous

#1B596C #1B306C #2F1B6C

triadic

#1B306C #6C1B30 #306C1B

tetradic

#1B306C #6C1B59 #6C571B #1B6C2F

square

#1B306C #6C1B59 #6C571B #1B6C2F

split-complementary

#1B306C #6C2F1B #596C1B

monochromatic

#060B18 #0F1A3B #1B306C #27469D #355CCC

Accessibility & contrast

On white

12.46

#1B306C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1B306C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B306C

12.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B306C	#FFFFFF	#000000	##FFFFFF
##1B306C	1.00	12.46	1.69	12.46
#FFFFFF	12.46	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07386E

Deuteranopia (green-blind)

#00306B

Tritanopia (blue-blind)

#003E49

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b306c;
/* rgb */ color: rgb(27, 48, 108);
/* oklch */ color: oklch(33.0% 0.108 266.1);

Tailwind

colors: {
  custom: {
    50: '#636797',
    500: '#1b306c',
    950: '#000000',
  },
}

SCSS

$custom: #1b306c;
$custom-light: #636797;
$custom-dark: #000000;

JSON

{
  "hex": "#1b306c",
  "rgb": {
    "r": 27,
    "g": 48,
    "b": 108
  },
  "hsl": {
    "h": 224.444,
    "s": 60,
    "l": 26.471
  },
  "oklch": {
    "l": 0.33014,
    "c": 0.10796,
    "h": 266.1
  },
  "luminance": 0.0343
}

Semantic roles & 50–950 ramp

primary

#1B306C

secondary

#A18842

accent

#BA45E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1B306C

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

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