#1B2E81#1B2E81

#1B2E81 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.141 H 268.0°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#1B2E81
RGB	rgb(27, 46, 129)
HSL	hsl(229, 65%, 31%)
HSV	hsv(229, 79%, 51%)
CMYK	cmyk(79.1%, 64.3%, 0%, 49.4%)
CIE-LAB	lab(22.90, 24.42, -48.86)
CIE-LCH	lch(22.90, 54.63, 296.56°)
OKLab	oklab(34.48% -0.005 -0.1413)
OKLCH	oklch(34.48% 0.141 268)
XYZ	xyz(5.3901, 3.7714, 21.2085)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2E81 #816E1B

analogous

#1B6181 #1B2E81 #3B1B81

triadic

#1B2E81 #811B2E #2E811B

tetradic

#1B2E81 #811B61 #816E1B #1B813B

square

#1B2E81 #811B61 #816E1B #1B813B

split-complementary

#1B2E81 #813B1B #61811B

monochromatic

#060A1C #101C4E #1B2E81 #2640B4 #3F5CD7

Accessibility & contrast

On white

11.97

#1B2E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1B2E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2E81

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2E81	#FFFFFF	#000000	##FFFFFF
##1B2E81	1.00	11.97	1.75	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C84

Deuteranopia (green-blind)

#00327F

Tritanopia (blue-blind)

#004453

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b2e81;
/* rgb */ color: rgb(27, 46, 129);
/* oklch */ color: oklch(34.5% 0.141 268.0);

Tailwind

colors: {
  custom: {
    50: '#6966a6',
    500: '#1b2e81',
    950: '#000000',
  },
}

SCSS

$custom: #1b2e81;
$custom-light: #6966a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2e81",
  "rgb": {
    "r": 27,
    "g": 46,
    "b": 129
  },
  "hsl": {
    "h": 228.824,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.3448,
    "c": 0.14137,
    "h": 268
  },
  "luminance": 0.03772
}

Semantic roles & 50–950 ramp

primary

#1B2E81

secondary

#B59F43

accent

#C93FE8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B2E81

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

Preview Lab → · Contrast checker → · Palette generator →