#1B236A#1B236A

#1B236A is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.1% C 0.123 H 271.7°. Best body text is #FFFFFF at 14.04:1 contrast (WCAG AA passes).

Color values

HEX	#1B236A
RGB	rgb(27, 35, 106)
HSL	hsl(234, 59%, 26%)
HSV	hsv(234, 75%, 42%)
CMYK	cmyk(74.5%, 67%, 0%, 58.4%)
CIE-LAB	lab(17.81, 23.03, -42.46)
CIE-LCH	lch(17.81, 48.30, 298.47°)
OKLab	oklab(30.07% 0.0037 -0.1226)
OKLCH	oklch(30.07% 0.123 271.7)
XYZ	xyz(3.6537, 2.4753, 13.9181)
Luminance	0.0248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B236A #6A621B

analogous

#1B4A6A #1B236A #3A1B6A

triadic

#1B236A #6A1B23 #236A1B

tetradic

#1B236A #6A1B4A #6A621B #1B6A3A

square

#1B236A #6A1B4A #6A621B #1B6A3A

split-complementary

#1B236A #6A3A1B #4A6A1B

monochromatic

#060818 #0F1339 #1B236A #27339B #3443CB

Accessibility & contrast

On white

14.04

#1B236A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#1B236A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B236A

14.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B236A	#FFFFFF	#000000	##FFFFFF
##1B236A	1.00	14.04	1.50	14.04
#FFFFFF	14.04	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F6C

Deuteranopia (green-blind)

#002869

Tritanopia (blue-blind)

#003543

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1b236a;
/* rgb */ color: rgb(27, 35, 106);
/* oklch */ color: oklch(30.1% 0.123 271.7);

Tailwind

colors: {
  custom: {
    50: '#645e95',
    500: '#1b236a',
    950: '#000000',
  },
}

SCSS

$custom: #1b236a;
$custom-light: #645e95;
$custom-dark: #000000;

JSON

{
  "hex": "#1b236a",
  "rgb": {
    "r": 27,
    "g": 35,
    "b": 106
  },
  "hsl": {
    "h": 233.924,
    "s": 59.398,
    "l": 26.078
  },
  "oklch": {
    "l": 0.30065,
    "c": 0.12268,
    "h": 271.7
  },
  "luminance": 0.02476
}

Semantic roles & 50–950 ramp

primary

#1B236A

secondary

#9F9642

accent

#D345E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #1B236A

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

Preview Lab → · Contrast checker → · Palette generator →