#1B298E#1B298E

#1B298E is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.9% C 0.165 H 269.0°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#1B298E
RGB	rgb(27, 41, 142)
HSL	hsl(233, 68%, 33%)
HSV	hsv(233, 81%, 56%)
CMYK	cmyk(81%, 71.1%, 0%, 44.3%)
CIE-LAB	lab(22.90, 32.79, -57.00)
CIE-LCH	lch(22.90, 65.76, 299.91°)
OKLab	oklab(34.87% -0.003 -0.1651)
OKLCH	oklch(34.87% 0.165 269)
XYZ	xyz(6.1257, 3.7712, 25.9910)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B298E #8E801B

analogous

#1B628E #1B298E #471B8E

triadic

#1B298E #8E1B29 #298E1B

tetradic

#1B298E #8E1B62 #8E801B #1B8E47

square

#1B298E #8E1B62 #8E801B #1B8E47

split-complementary

#1B298E #8E471B #628E1B

monochromatic

#070B27 #111A5B #1B298E #2538C1 #4759DC

Accessibility & contrast

On white

11.97

#1B298E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1B298E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B298E

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B298E	#FFFFFF	#000000	##FFFFFF
##1B298E	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)

#003C91

Deuteranopia (green-blind)

#00318C

Tritanopia (blue-blind)

#004558

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b298e;
/* rgb */ color: rgb(27, 41, 142);
/* oklch */ color: oklch(34.9% 0.165 269.0);

Tailwind

colors: {
  custom: {
    50: '#6d63b0',
    500: '#1b298e',
    950: '#000000',
  },
}

SCSS

$custom: #1b298e;
$custom-light: #6d63b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b298e",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 142
  },
  "hsl": {
    "h": 232.696,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.34866,
    "c": 0.16511,
    "h": 269
  },
  "luminance": 0.03772
}

Semantic roles & 50–950 ramp

primary

#1B298E

secondary

#BEAF47

accent

#D63DEB

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#080511

muted

#7B7980

Preview Lab

Preview with #1B298E

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

Preview Lab → · Contrast checker → · Palette generator →