#1B2F8A#1B2F8A

#1B2F8A is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.5% C 0.153 H 267.8°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F8A
RGB	rgb(27, 47, 138)
HSL	hsl(229, 67%, 32%)
HSV	hsv(229, 80%, 54%)
CMYK	cmyk(80.4%, 65.9%, 0%, 45.9%)
CIE-LAB	lab(24.00, 27.27, -52.70)
CIE-LCH	lch(24.00, 59.34, 297.36°)
OKLab	oklab(35.55% -0.0059 -0.1525)
OKLCH	oklch(35.55% 0.153 267.8)
XYZ	xyz(6.0544, 4.1003, 24.5122)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F8A #8A761B

analogous

#1B678A #1B2F8A #3E1B8A

triadic

#1B2F8A #8A1B2F #2F8A1B

tetradic

#1B2F8A #8A1B67 #8A761B #1B8A3E

square

#1B2F8A #8A1B67 #8A761B #1B8A3E

split-complementary

#1B2F8A #8A3E1B #678A1B

monochromatic

#070C24 #111E57 #1B2F8A #2540BD #4560DB

Accessibility & contrast

On white

11.54

#1B2F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1B2F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F8A

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F8A	#FFFFFF	#000000	##FFFFFF
##1B2F8A	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8D

Deuteranopia (green-blind)

#003488

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b2f8a;
/* rgb */ color: rgb(27, 47, 138);
/* oklch */ color: oklch(35.5% 0.153 267.8);

Tailwind

colors: {
  custom: {
    50: '#6b67ad',
    500: '#1b2f8a',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f8a;
$custom-light: #6b67ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f8a",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 138
  },
  "hsl": {
    "h": 229.189,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.35549,
    "c": 0.15261,
    "h": 267.8
  },
  "luminance": 0.04101
}

Semantic roles & 50–950 ramp

primary

#1B2F8A

secondary

#BCA745

accent

#CB3EEA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1B2F8A

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

Preview Lab → · Contrast checker → · Palette generator →