#1B2154#1B2154

#1B2154 is a dark, moderate blue. Relative luminance 0.020; OKLCH L 27.6% C 0.092 H 273.7°. Best body text is #FFFFFF at 15.08:1 contrast (WCAG AA passes).

Color values

HEX	#1B2154
RGB	rgb(27, 33, 84)
HSL	hsl(234, 51%, 22%)
HSV	hsv(234, 68%, 33%)
CMYK	cmyk(67.9%, 60.7%, 0%, 67.1%)
CIE-LAB	lab(15.28, 15.75, -31.97)
CIE-LCH	lch(15.28, 35.64, 296.22°)
OKLab	oklab(27.58% 0.0059 -0.0918)
OKLCH	oklch(27.58% 0.092 273.7)
XYZ	xyz(2.5956, 1.9606, 8.6274)
Luminance	0.0196 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2154 #544E1B

analogous

#1B3E54 #1B2154 #321B54

triadic

#1B2154 #541B21 #21541B

tetradic

#1B2154 #541B3E #544E1B #1B5432

square

#1B2154 #541B3E #544E1B #1B5432

split-complementary

#1B2154 #54321B #3E541B

monochromatic

#070917 #0C0F26 #1B2154 #2A3382 #3945B1

Accessibility & contrast

On white

15.08

#1B2154 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1B2154 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2154

15.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2154	#FFFFFF	#000000	##FFFFFF
##1B2154	1.00	15.08	1.39	15.08
#FFFFFF	15.08	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002956

Deuteranopia (green-blind)

#002453

Tritanopia (blue-blind)

#002D36

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b2154;
/* rgb */ color: rgb(27, 33, 84);
/* oklch */ color: oklch(27.6% 0.092 273.7);

Tailwind

colors: {
  custom: {
    50: '#5f5c85',
    500: '#1b2154',
    950: '#000000',
  },
}

SCSS

$custom: #1b2154;
$custom-light: #5f5c85;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2154",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 84
  },
  "hsl": {
    "h": 233.684,
    "s": 51.351,
    "l": 21.765
  },
  "oklch": {
    "l": 0.27579,
    "c": 0.09203,
    "h": 273.7
  },
  "luminance": 0.01961
}

Semantic roles & 50–950 ramp

primary

#1B2154

secondary

#8A8241

accent

#CC4DDB

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05040B

muted

#79797C

Preview Lab

Preview with #1B2154

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

Preview Lab → · Contrast checker → · Palette generator →