#1D2B4E#1D2B4E

#1D2B4E is a dark, moderate blue. Relative luminance 0.025; OKLCH L 29.6% C 0.067 H 266.0°. Best body text is #FFFFFF at 13.93:1 contrast (WCAG AA passes).

Color values

HEX	#1D2B4E
RGB	rgb(29, 43, 78)
HSL	hsl(223, 46%, 21%)
HSV	hsv(223, 63%, 31%)
CMYK	cmyk(62.8%, 44.9%, 0%, 69.4%)
CIE-LAB	lab(18.09, 6.46, -23.39)
CIE-LCH	lch(18.09, 24.27, 285.43°)
OKLab	oklab(29.61% -0.0046 -0.0664)
OKLCH	oklch(29.61% 0.067 266)
XYZ	xyz(2.7453, 2.5388, 7.5516)
Luminance	0.0254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2B4E #4E401D

analogous

#1D434E #1D2B4E #271D4E

triadic

#1D2B4E #4E1D2B #2B4E1D

tetradic

#1D2B4E #4E1D43 #4E401D #1D4E27

square

#1D2B4E #4E1D43 #4E401D #1D4E27

split-complementary

#1D2B4E #4E271D #434E1D

monochromatic

#080C16 #0C1221 #1D2B4E #2E447B #3E5CA7

Accessibility & contrast

On white

13.93

#1D2B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1D2B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2B4E

13.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2B4E	#FFFFFF	#000000	##FFFFFF
##1D2B4E	1.00	13.93	1.51	13.93
#FFFFFF	13.93	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C2F4F

Deuteranopia (green-blind)

#162A4D

Tritanopia (blue-blind)

#003338

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1d2b4e;
/* rgb */ color: rgb(29, 43, 78);
/* oklch */ color: oklch(29.6% 0.067 266.0);

Tailwind

colors: {
  custom: {
    50: '#5e6480',
    500: '#1d2b4e',
    950: '#000000',
  },
}

SCSS

$custom: #1d2b4e;
$custom-light: #5e6480;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2b4e",
  "rgb": {
    "r": 29,
    "g": 43,
    "b": 78
  },
  "hsl": {
    "h": 222.857,
    "s": 45.794,
    "l": 20.98
  },
  "oklch": {
    "l": 0.29612,
    "c": 0.06659,
    "h": 266
  },
  "luminance": 0.02539
}

Semantic roles & 50–950 ramp

primary

#1D2B4E

secondary

#837144

accent

#B052D5

background

#F5F5F7

surface

#E9EAEE

border

#C5C6C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #1D2B4E

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

Preview Lab → · Contrast checker → · Palette generator →