#1D3E80#1D3E80

#1D3E80 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.9% C 0.118 H 262.3°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E80
RGB	rgb(29, 62, 128)
HSL	hsl(220, 63%, 31%)
HSV	hsv(220, 77%, 50%)
CMYK	cmyk(77.3%, 51.6%, 0%, 49.8%)
CIE-LAB	lab(27.47, 13.06, -40.80)
CIE-LCH	lch(27.47, 42.84, 287.75°)
OKLab	oklab(37.92% -0.0158 -0.1173)
OKLCH	oklch(37.92% 0.118 262.3)
XYZ	xyz(6.1242, 5.2643, 21.1112)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E80 #805F1D

analogous

#1D6F80 #1D3E80 #2D1D80

triadic

#1D3E80 #801D3E #3E801D

tetradic

#1D3E80 #801D6F #805F1D #1D802D

square

#1D3E80 #801D6F #805F1D #1D802D

split-complementary

#1D3E80 #802D1D #6F801D

monochromatic

#060E1C #12264E #1D3E80 #2856B2 #4373D4

Accessibility & contrast

On white

10.23

#1D3E80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1D3E80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E80

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E80	#FFFFFF	#000000	##FFFFFF
##1D3E80	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174682

Deuteranopia (green-blind)

#003D7F

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1d3e80;
/* rgb */ color: rgb(29, 62, 128);
/* oklch */ color: oklch(37.9% 0.118 262.3);

Tailwind

colors: {
  custom: {
    50: '#6872a5',
    500: '#1d3e80',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e80;
$custom-light: #6872a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e80",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 128
  },
  "hsl": {
    "h": 220,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37921,
    "c": 0.11834,
    "h": 262.3
  },
  "luminance": 0.05265
}

Semantic roles & 50–950 ramp

primary

#1D3E80

secondary

#B38F45

accent

#AF42E6

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D3E80

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

Preview Lab → · Contrast checker → · Palette generator →