#1B156E#1B156E

#1B156E is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.1% C 0.145 H 274.8°. Best body text is #FFFFFF at 15.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B156E
RGB	rgb(27, 21, 110)
HSL	hsl(244, 68%, 26%)
HSV	hsv(244, 81%, 43%)
CMYK	cmyk(75.5%, 80.9%, 0%, 56.9%)
CIE-LAB	lab(14.93, 33.58, -49.81)
CIE-LCH	lch(14.93, 60.07, 303.99°)
OKLab	oklab(28.12% 0.012 -0.144)
OKLCH	oklch(28.12% 0.145 274.8)
XYZ	xyz(3.5337, 1.8948, 14.9283)
Luminance	0.0190 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B156E #686E15

analogous

#153B6E #1B156E #47156E

triadic

#1B156E #6E1B15 #156E1B

tetradic

#1B156E #6E153B #686E15 #156E47

square

#1B156E #6E153B #686E15 #156E47

split-complementary

#1B156E #6E4715 #3B6E15

monochromatic

#06051A #0E0B3B #1B156E #281FA1 #3429D5

Accessibility & contrast

On white

15.23

#1B156E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1B156E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B156E

15.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B156E	#FFFFFF	#000000	##FFFFFF
##1B156E	1.00	15.23	1.38	15.23
#FFFFFF	15.23	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002971

Deuteranopia (green-blind)

#00216C

Tritanopia (blue-blind)

#003041

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b156e;
/* rgb */ color: rgb(27, 21, 110);
/* oklch */ color: oklch(28.1% 0.145 274.8);

Tailwind

colors: {
  custom: {
    50: '#665499',
    500: '#1b156e',
    950: '#000000',
  },
}

SCSS

$custom: #1b156e;
$custom-light: #665499;
$custom-dark: #000000;

JSON

{
  "hex": "#1b156e",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 110
  },
  "hsl": {
    "h": 244.045,
    "s": 67.939,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28121,
    "c": 0.14455,
    "h": 274.8
  },
  "luminance": 0.01895
}

Semantic roles & 50–950 ramp

primary

#1B156E

secondary

#9DA43A

accent

#EB3DDF

background

#F6F4F9

surface

#EBE8F2

border

#C6C4CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B156E

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

Preview Lab → · Contrast checker → · Palette generator →