#1B299F#1B299F

#1B299F is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.7% C 0.187 H 268.5°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#1B299F
RGB	rgb(27, 41, 159)
HSL	hsl(234, 71%, 36%)
HSV	hsv(234, 83%, 62%)
CMYK	cmyk(83%, 74.2%, 0%, 37.6%)
CIE-LAB	lab(24.71, 39.01, -64.48)
CIE-LCH	lch(24.71, 75.36, 301.18°)
OKLab	oklab(36.7% -0.005 -0.1868)
OKLCH	oklch(36.7% 0.187 268.5)
XYZ	xyz(7.5008, 4.3212, 33.2329)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B299F #9F911B

analogous

#1B6B9F #1B299F #4F1B9F

triadic

#1B299F #9F1B29 #299F1B

tetradic

#1B299F #9F1B6B #9F911B #1B9F4F

square

#1B299F #9F1B6B #9F911B #1B9F4F

split-complementary

#1B299F #9F4F1B #6B9F1B

monochromatic

#090E36 #121C6B #1B299F #2436D3 #5362E2

Accessibility & contrast

On white

11.26

#1B299F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1B299F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B299F

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B299F	#FFFFFF	#000000	##FFFFFF
##1B299F	1.00	11.26	1.86	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A2

Deuteranopia (green-blind)

#00349D

Tritanopia (blue-blind)

#004B61

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b299f;
/* rgb */ color: rgb(27, 41, 159);
/* oklch */ color: oklch(36.7% 0.187 268.5);

Tailwind

colors: {
  custom: {
    50: '#7264bd',
    500: '#1b299f',
    950: '#000000',
  },
}

SCSS

$custom: #1b299f;
$custom-light: #7264bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b299f",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 159
  },
  "hsl": {
    "h": 233.636,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.36703,
    "c": 0.18692,
    "h": 268.5
  },
  "luminance": 0.04322
}

Semantic roles & 50–950 ramp

primary

#1B299F

secondary

#C5B851

accent

#DB3AEE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1B299F

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

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