#1D437D#1D437D

#1D437D is a dark, moderate blue. Relative luminance 0.058; OKLCH L 38.9% C 0.107 H 258.8°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#1D437D
RGB	rgb(29, 67, 125)
HSL	hsl(216, 62%, 30%)
HSV	hsv(216, 77%, 49%)
CMYK	cmyk(76.8%, 46.4%, 0%, 51%)
CIE-LAB	lab(28.79, 8.38, -36.81)
CIE-LCH	lch(28.79, 37.75, 282.82°)
OKLab	oklab(38.86% -0.0209 -0.1054)
OKLCH	oklch(38.86% 0.108 258.8)
XYZ	xyz(6.2142, 5.7555, 20.1815)
Luminance	0.0576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D437D #7D571D

analogous

#1D737D #1D437D #271D7D

triadic

#1D437D #7D1D43 #437D1D

tetradic

#1D437D #7D1D73 #7D571D #1D7D27

square

#1D437D #7D1D73 #7D571D #1D7D27

split-complementary

#1D437D #7D271D #737D1D

monochromatic

#060E1A #11284B #1D437D #295EAF #417BD3

Accessibility & contrast

On white

9.76

#1D437D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1D437D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D437D

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D437D	#FFFFFF	#000000	##FFFFFF
##1D437D	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25497F

Deuteranopia (green-blind)

#12407C

Tritanopia (blue-blind)

#00515A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1d437d;
/* rgb */ color: rgb(29, 67, 125);
/* oklch */ color: oklch(38.9% 0.107 258.8);

Tailwind

colors: {
  custom: {
    50: '#6776a3',
    500: '#1d437d',
    950: '#000000',
  },
}

SCSS

$custom: #1d437d;
$custom-light: #6776a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d437d",
  "rgb": {
    "r": 29,
    "g": 67,
    "b": 125
  },
  "hsl": {
    "h": 216.25,
    "s": 62.338,
    "l": 30.196
  },
  "oklch": {
    "l": 0.38862,
    "c": 0.1075,
    "h": 258.8
  },
  "luminance": 0.05756
}

Semantic roles & 50–950 ramp

primary

#1D437D

secondary

#B18645

accent

#A542E5

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D437D

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

Preview Lab → · Contrast checker → · Palette generator →