#1B239E#1B239E

#1B239E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.7% C 0.192 H 269.1°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#1B239E
RGB	rgb(27, 35, 158)
HSL	hsl(236, 71%, 36%)
HSV	hsv(236, 83%, 62%)
CMYK	cmyk(82.9%, 77.8%, 0%, 38%)
CIE-LAB	lab(23.35, 42.18, -66.11)
CIE-LCH	lch(23.35, 78.42, 302.54°)
OKLab	oklab(35.71% -0.0029 -0.1915)
OKLCH	oklch(35.71% 0.192 269.1)
XYZ	xyz(7.2225, 3.9028, 32.7138)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B239E #9E961B

analogous

#1B659E #1B239E #551B9E

triadic

#1B239E #9E1B23 #239E1B

tetradic

#1B239E #9E1B65 #9E961B #1B9E55

square

#1B239E #9E1B65 #9E961B #1B9E55

split-complementary

#1B239E #9E551B #659E1B

monochromatic

#090C35 #12176A #1B239E #242FD2 #525BE1

Accessibility & contrast

On white

11.79

#1B239E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B239E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B239E

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B239E	#FFFFFF	#000000	##FFFFFF
##1B239E	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA1

Deuteranopia (green-blind)

#00319C

Tritanopia (blue-blind)

#00485F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b239e;
/* rgb */ color: rgb(27, 35, 158);
/* oklch */ color: oklch(35.7% 0.192 269.1);

Tailwind

colors: {
  custom: {
    50: '#7260bc',
    500: '#1b239e',
    950: '#000000',
  },
}

SCSS

$custom: #1b239e;
$custom-light: #7260bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b239e",
  "rgb": {
    "r": 27,
    "g": 35,
    "b": 158
  },
  "hsl": {
    "h": 236.336,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.35705,
    "c": 0.19156,
    "h": 269.1
  },
  "luminance": 0.03904
}

Semantic roles & 50–950 ramp

primary

#1B239E

secondary

#C4BD51

accent

#E33AEE

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #1B239E

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

Preview Lab → · Contrast checker → · Palette generator →