#1B2C80#1B2C80

#1B2C80 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.0% C 0.143 H 268.5°. Best body text is #FFFFFF at 12.22:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C80
RGB	rgb(27, 44, 128)
HSL	hsl(230, 65%, 30%)
HSV	hsv(230, 79%, 50%)
CMYK	cmyk(78.9%, 65.6%, 0%, 49.8%)
CIE-LAB	lab(22.27, 25.41, -49.26)
CIE-LCH	lch(22.27, 55.43, 297.29°)
OKLab	oklab(33.99% -0.0037 -0.1425)
OKLCH	oklch(33.99% 0.143 268.5)
XYZ	xyz(5.2476, 3.5923, 20.8347)
Luminance	0.0359 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C80 #806F1B

analogous

#1B5E80 #1B2C80 #3C1B80

triadic

#1B2C80 #801B2C #2C801B

tetradic

#1B2C80 #801B5E #806F1B #1B803C

square

#1B2C80 #801B5E #806F1B #1B803C

split-complementary

#1B2C80 #803C1B #5E801B

monochromatic

#06091B #101B4D #1B2C80 #263DB3 #3F58D6

Accessibility & contrast

On white

12.22

#1B2C80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1B2C80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C80

12.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C80	#FFFFFF	#000000	##FFFFFF
##1B2C80	1.00	12.22	1.72	12.22
#FFFFFF	12.22	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A83

Deuteranopia (green-blind)

#00317E

Tritanopia (blue-blind)

#004251

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2c80;
/* rgb */ color: rgb(27, 44, 128);
/* oklch */ color: oklch(34.0% 0.143 268.5);

Tailwind

colors: {
  custom: {
    50: '#6965a6',
    500: '#1b2c80',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c80;
$custom-light: #6965a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c80",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 128
  },
  "hsl": {
    "h": 229.901,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.3399,
    "c": 0.14251,
    "h": 268.5
  },
  "luminance": 0.03593
}

Semantic roles & 50–950 ramp

primary

#1B2C80

secondary

#B4A143

accent

#CC40E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1B2C80

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

Preview Lab → · Contrast checker → · Palette generator →