#1B2E7B#1B2E7B

#1B2E7B is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.9% C 0.133 H 267.8°. Best body text is #FFFFFF at 12.19:1 contrast (WCAG AA passes).

Color values

HEX	#1B2E7B
RGB	rgb(27, 46, 123)
HSL	hsl(228, 64%, 29%)
HSV	hsv(228, 78%, 48%)
CMYK	cmyk(78%, 62.6%, 0%, 51.8%)
CIE-LAB	lab(22.36, 22.04, -45.95)
CIE-LCH	lch(22.36, 50.96, 295.62°)
OKLab	oklab(33.91% -0.005 -0.1327)
OKLCH	oklch(33.91% 0.133 267.8)
XYZ	xyz(5.0029, 3.6165, 19.1694)
Luminance	0.0362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2E7B #7B681B

analogous

#1B5E7B #1B2E7B #381B7B

triadic

#1B2E7B #7B1B2E #2E7B1B

tetradic

#1B2E7B #7B1B5E #7B681B #1B7B38

square

#1B2E7B #7B1B5E #7B681B #1B7B38

split-complementary

#1B2E7B #7B381B #5E7B1B

monochromatic

#060919 #101B49 #1B2E7B #2641AD #3C5AD4

Accessibility & contrast

On white

12.19

#1B2E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1B2E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2E7B

12.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2E7B	#FFFFFF	#000000	##FFFFFF
##1B2E7B	1.00	12.19	1.72	12.19
#FFFFFF	12.19	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7E

Deuteranopia (green-blind)

#00317A

Tritanopia (blue-blind)

#00424F

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2e7b;
/* rgb */ color: rgb(27, 46, 123);
/* oklch */ color: oklch(33.9% 0.133 267.8);

Tailwind

colors: {
  custom: {
    50: '#6766a2',
    500: '#1b2e7b',
    950: '#000000',
  },
}

SCSS

$custom: #1b2e7b;
$custom-light: #6766a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2e7b",
  "rgb": {
    "r": 27,
    "g": 46,
    "b": 123
  },
  "hsl": {
    "h": 228.125,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.33913,
    "c": 0.13284,
    "h": 267.8
  },
  "luminance": 0.03617
}

Semantic roles & 50–950 ramp

primary

#1B2E7B

secondary

#AF9A43

accent

#C641E7

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1B2E7B

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

Preview Lab → · Contrast checker → · Palette generator →