#1B2F7C#1B2F7C

#1B2F7C is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.2% C 0.133 H 267.5°. Best body text is #FFFFFF at 12.04:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F7C
RGB	rgb(27, 47, 124)
HSL	hsl(228, 64%, 30%)
HSV	hsv(228, 78%, 49%)
CMYK	cmyk(78.2%, 62.1%, 0%, 51.4%)
CIE-LAB	lab(22.73, 21.73, -45.99)
CIE-LCH	lch(22.73, 50.87, 295.29°)
OKLab	oklab(34.21% -0.0057 -0.1328)
OKLCH	oklch(34.21% 0.133 267.5)
XYZ	xyz(5.1053, 3.7207, 19.5140)
Luminance	0.0372 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F7C #7C681B

analogous

#1B607C #1B2F7C #381B7C

triadic

#1B2F7C #7C1B2F #2F7C1B

tetradic

#1B2F7C #7C1B60 #7C681B #1B7C38

square

#1B2F7C #7C1B60 #7C681B #1B7C38

split-complementary

#1B2F7C #7C381B #607C1B

monochromatic

#050A19 #101C4A #1B2F7C #2642AE #3D5CD5

Accessibility & contrast

On white

12.04

#1B2F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1B2F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F7C

12.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F7C	#FFFFFF	#000000	##FFFFFF
##1B2F7C	1.00	12.04	1.74	12.04
#FFFFFF	12.04	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7F

Deuteranopia (green-blind)

#00327B

Tritanopia (blue-blind)

#004350

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2f7c;
/* rgb */ color: rgb(27, 47, 124);
/* oklch */ color: oklch(34.2% 0.133 267.5);

Tailwind

colors: {
  custom: {
    50: '#6867a3',
    500: '#1b2f7c',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f7c;
$custom-light: #6867a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f7c",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 124
  },
  "hsl": {
    "h": 227.629,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.34212,
    "c": 0.13297,
    "h": 267.5
  },
  "luminance": 0.03721
}

Semantic roles & 50–950 ramp

primary

#1B2F7C

secondary

#B09943

accent

#C541E7

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B2F7C

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

Preview Lab → · Contrast checker → · Palette generator →