#1B2F7A#1B2F7A

#1B2F7A is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.0% C 0.130 H 267.5°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F7A
RGB	rgb(27, 47, 122)
HSL	hsl(227, 64%, 29%)
HSV	hsv(227, 78%, 48%)
CMYK	cmyk(77.9%, 61.5%, 0%, 52.2%)
CIE-LAB	lab(22.55, 20.93, -45.01)
CIE-LCH	lch(22.55, 49.64, 294.94°)
OKLab	oklab(34.03% -0.0057 -0.13)
OKLCH	oklch(34.03% 0.13 267.5)
XYZ	xyz(4.9801, 3.6706, 18.8546)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F7A #7A661B

analogous

#1B5F7A #1B2F7A #371B7A

triadic

#1B2F7A #7A1B2F #2F7A1B

tetradic

#1B2F7A #7A1B5F #7A661B #1B7A37

square

#1B2F7A #7A1B5F #7A661B #1B7A37

split-complementary

#1B2F7A #7A371B #5F7A1B

monochromatic

#060A19 #101C48 #1B2F7A #2642AC #3C5CD4

Accessibility & contrast

On white

12.11

#1B2F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1B2F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F7A

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F7A	#FFFFFF	#000000	##FFFFFF
##1B2F7A	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7D

Deuteranopia (green-blind)

#003279

Tritanopia (blue-blind)

#00424F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2f7a;
/* rgb */ color: rgb(27, 47, 122);
/* oklch */ color: oklch(34.0% 0.130 267.5);

Tailwind

colors: {
  custom: {
    50: '#6767a1',
    500: '#1b2f7a',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f7a;
$custom-light: #6767a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f7a",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 122
  },
  "hsl": {
    "h": 227.368,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.34027,
    "c": 0.13009,
    "h": 267.5
  },
  "luminance": 0.03671
}

Semantic roles & 50–950 ramp

primary

#1B2F7A

secondary

#AE9843

accent

#C441E7

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B2F7A

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

Preview Lab → · Contrast checker → · Palette generator →