#1B2079#1B2079

#1B2079 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.1% C 0.147 H 271.6°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B2079
RGB	rgb(27, 32, 121)
HSL	hsl(237, 64%, 29%)
HSV	hsv(237, 78%, 47%)
CMYK	cmyk(77.7%, 73.6%, 0%, 52.5%)
CIE-LAB	lab(18.57, 30.79, -50.90)
CIE-LCH	lch(18.57, 59.49, 301.17°)
OKLab	oklab(31.08% 0.0042 -0.1473)
OKLCH	oklch(31.08% 0.147 271.6)
XYZ	xyz(4.4185, 2.6460, 18.3633)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2079 #79741B

analogous

#1B4F79 #1B2079 #451B79

triadic

#1B2079 #791B20 #20791B

tetradic

#1B2079 #791B4F #79741B #1B7945

square

#1B2079 #791B4F #79741B #1B7945

split-complementary

#1B2079 #79451B #4F791B

monochromatic

#060719 #101347 #1B2079 #262DAB #3B43D3

Accessibility & contrast

On white

13.73

#1B2079 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1B2079 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2079

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2079	#FFFFFF	#000000	##FFFFFF
##1B2079	1.00	13.73	1.53	13.73
#FFFFFF	13.73	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327C

Deuteranopia (green-blind)

#002977

Tritanopia (blue-blind)

#00394A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b2079;
/* rgb */ color: rgb(27, 32, 121);
/* oklch */ color: oklch(31.1% 0.147 271.6);

Tailwind

colors: {
  custom: {
    50: '#685ca1',
    500: '#1b2079',
    950: '#000000',
  },
}

SCSS

$custom: #1b2079;
$custom-light: #685ca1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2079",
  "rgb": {
    "r": 27,
    "g": 32,
    "b": 121
  },
  "hsl": {
    "h": 236.809,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.31077,
    "c": 0.14737,
    "h": 271.6
  },
  "luminance": 0.02647
}

Semantic roles & 50–950 ramp

primary

#1B2079

secondary

#ADA843

accent

#DE41E7

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B2079

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

Preview Lab → · Contrast checker → · Palette generator →