#1B2F8C#1B2F8C

#1B2F8C is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.7% C 0.155 H 267.8°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F8C
RGB	rgb(27, 47, 140)
HSL	hsl(229, 68%, 33%)
HSV	hsv(229, 81%, 55%)
CMYK	cmyk(80.7%, 66.4%, 0%, 45.1%)
CIE-LAB	lab(24.19, 28.05, -53.63)
CIE-LCH	lch(24.19, 60.53, 297.61°)
OKLab	oklab(35.75% -0.006 -0.1552)
OKLCH	oklch(35.75% 0.155 267.8)
XYZ	xyz(6.2005, 4.1588, 25.2818)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F8C #8C781B

analogous

#1B678C #1B2F8C #401B8C

triadic

#1B2F8C #8C1B2F #2F8C1B

tetradic

#1B2F8C #8C1B67 #8C781B #1B8C40

square

#1B2F8C #8C1B67 #8C781B #1B8C40

split-complementary

#1B2F8C #8C401B #678C1B

monochromatic

#070D25 #111E59 #1B2F8C #2540BF #4660DB

Accessibility & contrast

On white

11.46

#1B2F8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1B2F8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F8C

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F8C	#FFFFFF	#000000	##FFFFFF
##1B2F8C	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8F

Deuteranopia (green-blind)

#00348A

Tritanopia (blue-blind)

#004859

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b2f8c;
/* rgb */ color: rgb(27, 47, 140);
/* oklch */ color: oklch(35.7% 0.155 267.8);

Tailwind

colors: {
  custom: {
    50: '#6c67af',
    500: '#1b2f8c',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f8c;
$custom-light: #6c67af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f8c",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 140
  },
  "hsl": {
    "h": 229.381,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.35746,
    "c": 0.15536,
    "h": 267.8
  },
  "luminance": 0.04159
}

Semantic roles & 50–950 ramp

primary

#1B2F8C

secondary

#BDA846

accent

#CC3DEB

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1B2F8C

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

Preview Lab → · Contrast checker → · Palette generator →