#1D2A5B#1D2A5B

#1D2A5B is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.4% C 0.089 H 269.3°. Best body text is #FFFFFF at 13.69:1 contrast (WCAG AA passes).

Color values

HEX	#1D2A5B
RGB	rgb(29, 42, 91)
HSL	hsl(227, 52%, 24%)
HSV	hsv(227, 68%, 36%)
CMYK	cmyk(68.1%, 53.8%, 0%, 64.3%)
CIE-LAB	lab(18.68, 12.34, -31.16)
CIE-LCH	lch(18.68, 33.52, 291.61°)
OKLab	oklab(30.35% -0.0011 -0.0893)
OKLCH	oklch(30.35% 0.089 269.3)
XYZ	xyz(3.2223, 2.6722, 10.2415)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2A5B #5B4E1D

analogous

#1D495B #1D2A5B #2F1D5B

triadic

#1D2A5B #5B1D2A #2A5B1D

tetradic

#1D2A5B #5B1D49 #5B4E1D #1D5B2F

square

#1D2A5B #5B1D49 #5B4E1D #1D5B2F

split-complementary

#1D2A5B #5B2F1D #495B1D

monochromatic

#070B17 #0E152D #1D2A5B #2C3F89 #3B55B8

Accessibility & contrast

On white

13.69

#1D2A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1D2A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2A5B

13.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2A5B	#FFFFFF	#000000	##FFFFFF
##1D2A5B	1.00	13.69	1.53	13.69
#FFFFFF	13.69	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F305D

Deuteranopia (green-blind)

#022B5A

Tritanopia (blue-blind)

#00353E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1d2a5b;
/* rgb */ color: rgb(29, 42, 91);
/* oklch */ color: oklch(30.4% 0.089 269.3);

Tailwind

colors: {
  custom: {
    50: '#61638a',
    500: '#1d2a5b',
    950: '#000000',
  },
}

SCSS

$custom: #1d2a5b;
$custom-light: #61638a;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2a5b",
  "rgb": {
    "r": 29,
    "g": 42,
    "b": 91
  },
  "hsl": {
    "h": 227.419,
    "s": 51.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.30352,
    "c": 0.08928,
    "h": 269.3
  },
  "luminance": 0.02672
}

Semantic roles & 50–950 ramp

primary

#1D2A5B

secondary

#908044

accent

#BD4DDB

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #1D2A5B

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

Preview Lab → · Contrast checker → · Palette generator →