#1B2E79#1B2E79

#1B2E79 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.7% C 0.130 H 267.8°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#1B2E79
RGB	rgb(27, 46, 121)
HSL	hsl(228, 64%, 29%)
HSV	hsv(228, 78%, 47%)
CMYK	cmyk(77.7%, 62%, 0%, 52.5%)
CIE-LAB	lab(22.18, 21.23, -44.97)
CIE-LCH	lch(22.18, 49.73, 295.28°)
OKLab	oklab(33.73% -0.005 -0.1299)
OKLCH	oklch(33.73% 0.13 267.8)
XYZ	xyz(4.8790, 3.5669, 18.5168)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2E79 #79661B

analogous

#1B5D79 #1B2E79 #371B79

triadic

#1B2E79 #791B2E #2E791B

tetradic

#1B2E79 #791B5D #79661B #1B7937

square

#1B2E79 #791B5D #79661B #1B7937

split-complementary

#1B2E79 #79371B #5D791B

monochromatic

#060A19 #101B47 #1B2E79 #2641AB #3B5AD3

Accessibility & contrast

On white

12.26

#1B2E79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B2E79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2E79

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2E79	#FFFFFF	#000000	##FFFFFF
##1B2E79	1.00	12.26	1.71	12.26
#FFFFFF	12.26	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7B

Deuteranopia (green-blind)

#003178

Tritanopia (blue-blind)

#00414E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2e79;
/* rgb */ color: rgb(27, 46, 121);
/* oklch */ color: oklch(33.7% 0.130 267.8);

Tailwind

colors: {
  custom: {
    50: '#6766a0',
    500: '#1b2e79',
    950: '#000000',
  },
}

SCSS

$custom: #1b2e79;
$custom-light: #6766a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2e79",
  "rgb": {
    "r": 27,
    "g": 46,
    "b": 121
  },
  "hsl": {
    "h": 227.872,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.33727,
    "c": 0.12996,
    "h": 267.8
  },
  "luminance": 0.03567
}

Semantic roles & 50–950 ramp

primary

#1B2E79

secondary

#AD9843

accent

#C541E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050F

muted

#7A7A7E

Preview Lab

Preview with #1B2E79

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

Preview Lab → · Contrast checker → · Palette generator →