#1D3A72#1D3A72

#1D3A72 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.9% C 0.103 H 262.0°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A72
RGB	rgb(29, 58, 114)
HSL	hsl(220, 59%, 28%)
HSV	hsv(220, 75%, 45%)
CMYK	cmyk(74.6%, 49.1%, 0%, 55.3%)
CIE-LAB	lab(25.27, 10.18, -35.52)
CIE-LCH	lch(25.27, 36.95, 285.99°)
OKLab	oklab(35.91% -0.0143 -0.1018)
OKLCH	oklch(35.91% 0.103 262)
XYZ	xyz(5.0559, 4.5017, 16.5188)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A72 #72551D

analogous

#1D6572 #1D3A72 #2A1D72

triadic

#1D3A72 #721D3A #3A721D

tetradic

#1D3A72 #721D65 #72551D #1D722A

square

#1D3A72 #721D65 #72551D #1D722A

split-complementary

#1D3A72 #722A1D #65721D

monochromatic

#060C18 #112141 #1D3A72 #2953A3 #3C6ECD

Accessibility & contrast

On white

11.05

#1D3A72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1D3A72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A72

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A72	#FFFFFF	#000000	##FFFFFF
##1D3A72	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C4074

Deuteranopia (green-blind)

#083871

Tritanopia (blue-blind)

#004750

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d3a72;
/* rgb */ color: rgb(29, 58, 114);
/* oklch */ color: oklch(35.9% 0.103 262.0);

Tailwind

colors: {
  custom: {
    50: '#656f9b',
    500: '#1d3a72',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a72;
$custom-light: #656f9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a72",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 114
  },
  "hsl": {
    "h": 219.529,
    "s": 59.441,
    "l": 28.039
  },
  "oklch": {
    "l": 0.3591,
    "c": 0.10282,
    "h": 262
  },
  "luminance": 0.04502
}

Semantic roles & 50–950 ramp

primary

#1D3A72

secondary

#A68545

accent

#AD45E3

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1D3A72

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

Preview Lab → · Contrast checker → · Palette generator →