#1B2152#1B2152

#1B2152 is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.4% C 0.089 H 273.8°. Best body text is #FFFFFF at 15.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B2152
RGB	rgb(27, 33, 82)
HSL	hsl(233, 50%, 21%)
HSV	hsv(233, 67%, 32%)
CMYK	cmyk(67.1%, 59.8%, 0%, 67.8%)
CIE-LAB	lab(15.11, 14.95, -30.89)
CIE-LCH	lch(15.11, 34.31, 295.83°)
OKLab	oklab(27.4% 0.0058 -0.0886)
OKLCH	oklch(27.4% 0.089 273.8)
XYZ	xyz(2.5183, 1.9297, 8.2208)
Luminance	0.0193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2152 #524C1B

analogous

#1B3D52 #1B2152 #311B52

triadic

#1B2152 #521B21 #21521B

tetradic

#1B2152 #521B3D #524C1B #1B5231

square

#1B2152 #521B3D #524C1B #1B5231

split-complementary

#1B2152 #52311B #3D521B

monochromatic

#080917 #0C0E24 #1B2152 #2A3480 #3946AE

Accessibility & contrast

On white

15.15

#1B2152 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1B2152 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2152

15.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2152	#FFFFFF	#000000	##FFFFFF
##1B2152	1.00	15.15	1.39	15.15
#FFFFFF	15.15	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#012854

Deuteranopia (green-blind)

#002451

Tritanopia (blue-blind)

#002D35

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b2152;
/* rgb */ color: rgb(27, 33, 82);
/* oklch */ color: oklch(27.4% 0.089 273.8);

Tailwind

colors: {
  custom: {
    50: '#5e5c83',
    500: '#1b2152',
    950: '#000000',
  },
}

SCSS

$custom: #1b2152;
$custom-light: #5e5c83;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2152",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 82
  },
  "hsl": {
    "h": 233.455,
    "s": 50.459,
    "l": 21.373
  },
  "oklch": {
    "l": 0.27403,
    "c": 0.08883,
    "h": 273.8
  },
  "luminance": 0.0193
}

Semantic roles & 50–950 ramp

primary

#1B2152

secondary

#888041

accent

#CB4EDA

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05040A

muted

#79797C

Preview Lab

Preview with #1B2152

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

Preview Lab → · Contrast checker → · Palette generator →