#1B299E#1B299E

#1B299E is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.6% C 0.186 H 268.5°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#1B299E
RGB	rgb(27, 41, 158)
HSL	hsl(234, 71%, 36%)
HSV	hsv(234, 83%, 62%)
CMYK	cmyk(82.9%, 74.1%, 0%, 38%)
CIE-LAB	lab(24.60, 38.65, -64.05)
CIE-LCH	lch(24.60, 74.81, 301.11°)
OKLab	oklab(36.59% -0.0048 -0.1856)
OKLCH	oklch(36.59% 0.186 268.5)
XYZ	xyz(7.4144, 4.2866, 32.7778)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B299E #9E901B

analogous

#1B6B9E #1B299E #4F1B9E

triadic

#1B299E #9E1B29 #299E1B

tetradic

#1B299E #9E1B6B #9E901B #1B9E4F

square

#1B299E #9E1B6B #9E901B #1B9E4F

split-complementary

#1B299E #9E4F1B #6B9E1B

monochromatic

#090E35 #121B6A #1B299E #2437D2 #5261E1

Accessibility & contrast

On white

11.30

#1B299E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1B299E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B299E

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B299E	#FFFFFF	#000000	##FFFFFF
##1B299E	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A1

Deuteranopia (green-blind)

#00349C

Tritanopia (blue-blind)

#004B61

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b299e;
/* rgb */ color: rgb(27, 41, 158);
/* oklch */ color: oklch(36.6% 0.186 268.5);

Tailwind

colors: {
  custom: {
    50: '#7164bc',
    500: '#1b299e',
    950: '#000000',
  },
}

SCSS

$custom: #1b299e;
$custom-light: #7164bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b299e",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 158
  },
  "hsl": {
    "h": 233.588,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.36593,
    "c": 0.18566,
    "h": 268.5
  },
  "luminance": 0.04288
}

Semantic roles & 50–950 ramp

primary

#1B299E

secondary

#C4B851

accent

#DA3AEE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1B299E

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

Preview Lab → · Contrast checker → · Palette generator →