#1B2C8B#1B2C8B

#1B2C8B is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.1% C 0.158 H 268.5°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C8B
RGB	rgb(27, 44, 139)
HSL	hsl(231, 67%, 33%)
HSV	hsv(231, 81%, 55%)
CMYK	cmyk(80.6%, 68.3%, 0%, 45.5%)
CIE-LAB	lab(23.33, 29.68, -54.42)
CIE-LCH	lch(23.33, 61.99, 298.61°)
OKLab	oklab(35.09% -0.0043 -0.1576)
OKLCH	oklch(35.09% 0.158 268.5)
XYZ	xyz(6.0113, 3.8978, 24.8566)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C8B #8B7A1B

analogous

#1B648B #1B2C8B #421B8B

triadic

#1B2C8B #8B1B2C #2C8B1B

tetradic

#1B2C8B #8B1B64 #8B7A1B #1B8B42

square

#1B2C8B #8B1B64 #8B7A1B #1B8B42

split-complementary

#1B2C8B #8B421B #648B1B

monochromatic

#070C25 #111C58 #1B2C8B #253CBE #455CDB

Accessibility & contrast

On white

11.80

#1B2C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B2C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C8B

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C8B	#FFFFFF	#000000	##FFFFFF
##1B2C8B	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8E

Deuteranopia (green-blind)

#003289

Tritanopia (blue-blind)

#004657

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2c8b;
/* rgb */ color: rgb(27, 44, 139);
/* oklch */ color: oklch(35.1% 0.158 268.5);

Tailwind

colors: {
  custom: {
    50: '#6c65ae',
    500: '#1b2c8b',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c8b;
$custom-light: #6c65ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c8b",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 139
  },
  "hsl": {
    "h": 230.893,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.35087,
    "c": 0.15762,
    "h": 268.5
  },
  "luminance": 0.03898
}

Semantic roles & 50–950 ramp

primary

#1B2C8B

secondary

#BCAA45

accent

#D03DEA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1B2C8B

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

Preview Lab → · Contrast checker → · Palette generator →