#1B2D52#1B2D52

#1B2D52 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.3% C 0.071 H 263.2°. Best body text is #FFFFFF at 13.60:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D52
RGB	rgb(27, 45, 82)
HSL	hsl(220, 50%, 21%)
HSV	hsv(220, 67%, 32%)
CMYK	cmyk(67.1%, 45.1%, 0%, 67.8%)
CIE-LAB	lab(18.88, 6.12, -24.84)
CIE-LCH	lch(18.88, 25.58, 283.85°)
OKLab	oklab(30.27% -0.0084 -0.0707)
OKLCH	oklch(30.27% 0.071 263.2)
XYZ	xyz(2.9128, 2.7187, 8.3523)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D52 #52401B

analogous

#1B4952 #1B2D52 #251B52

triadic

#1B2D52 #521B2D #2D521B

tetradic

#1B2D52 #521B49 #52401B #1B5225

square

#1B2D52 #521B49 #52401B #1B5225

split-complementary

#1B2D52 #52251B #49521B

monochromatic

#080D17 #0C1424 #1B2D52 #2A4680 #3960AE

Accessibility & contrast

On white

13.60

#1B2D52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1B2D52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D52

13.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D52	#FFFFFF	#000000	##FFFFFF
##1B2D52	1.00	13.60	1.54	13.60
#FFFFFF	13.60	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D3153

Deuteranopia (green-blind)

#152C51

Tritanopia (blue-blind)

#00353B

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b2d52;
/* rgb */ color: rgb(27, 45, 82);
/* oklch */ color: oklch(30.3% 0.071 263.2);

Tailwind

colors: {
  custom: {
    50: '#5d6583',
    500: '#1b2d52',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d52;
$custom-light: #5d6583;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d52",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 82
  },
  "hsl": {
    "h": 220.364,
    "s": 50.459,
    "l": 21.373
  },
  "oklch": {
    "l": 0.3027,
    "c": 0.0712,
    "h": 263.2
  },
  "luminance": 0.02719
}

Semantic roles & 50–950 ramp

primary

#1B2D52

secondary

#887141

accent

#AC4EDA

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05050A

muted

#797A7C

Preview Lab

Preview with #1B2D52

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

Preview Lab → · Contrast checker → · Palette generator →