#1B2E52#1B2E52

#1B2E52 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.5% C 0.070 H 262.1°. Best body text is #FFFFFF at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B2E52
RGB	rgb(27, 46, 82)
HSL	hsl(219, 50%, 21%)
HSV	hsv(219, 67%, 32%)
CMYK	cmyk(67.1%, 43.9%, 0%, 67.8%)
CIE-LAB	lab(19.21, 5.40, -24.32)
CIE-LCH	lch(19.21, 24.91, 282.52°)
OKLab	oklab(30.52% -0.0096 -0.0692)
OKLCH	oklch(30.52% 0.07 262.1)
XYZ	xyz(2.9514, 2.7959, 8.3651)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2E52 #523F1B

analogous

#1B4A52 #1B2E52 #241B52

triadic

#1B2E52 #521B2E #2E521B

tetradic

#1B2E52 #521B4A #523F1B #1B5224

square

#1B2E52 #521B4A #523F1B #1B5224

split-complementary

#1B2E52 #52241B #4A521B

monochromatic

#080D17 #0C1424 #1B2E52 #2A4880 #3962AE

Accessibility & contrast

On white

13.47

#1B2E52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B2E52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2E52

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2E52	#FFFFFF	#000000	##FFFFFF
##1B2E52	1.00	13.47	1.56	13.47
#FFFFFF	13.47	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E3153

Deuteranopia (green-blind)

#172C51

Tritanopia (blue-blind)

#00363C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2e52;
/* rgb */ color: rgb(27, 46, 82);
/* oklch */ color: oklch(30.5% 0.070 262.1);

Tailwind

colors: {
  custom: {
    50: '#5d6683',
    500: '#1b2e52',
    950: '#000000',
  },
}

SCSS

$custom: #1b2e52;
$custom-light: #5d6683;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2e52",
  "rgb": {
    "r": 27,
    "g": 46,
    "b": 82
  },
  "hsl": {
    "h": 219.273,
    "s": 50.459,
    "l": 21.373
  },
  "oklch": {
    "l": 0.30523,
    "c": 0.06983,
    "h": 262.1
  },
  "luminance": 0.02796
}

Semantic roles & 50–950 ramp

primary

#1B2E52

secondary

#886F41

accent

#AA4EDA

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04050A

muted

#797A7C

Preview Lab

Preview with #1B2E52

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

Preview Lab → · Contrast checker → · Palette generator →