#1D3DA0#1D3DA0

#1D3DA0 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.165 H 265.5°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#1D3DA0
RGB	rgb(29, 61, 160)
HSL	hsl(225, 69%, 37%)
HSV	hsv(225, 82%, 63%)
CMYK	cmyk(81.9%, 61.9%, 0%, 37.3%)
CIE-LAB	lab(29.75, 26.55, -56.78)
CIE-LCH	lch(29.75, 62.68, 295.06°)
OKLab	oklab(40.44% -0.0128 -0.1643)
OKLCH	oklch(40.44% 0.165 265.5)
XYZ	xyz(8.5184, 6.1358, 33.9863)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3DA0 #A0801D

analogous

#1D7EA0 #1D3DA0 #3F1DA0

triadic

#1D3DA0 #A01D3D #3DA01D

tetradic

#1D3DA0 #A01D7E #A0801D #1DA03F

square

#1D3DA0 #A01D7E #A0801D #1DA03F

split-complementary

#1D3DA0 #A03F1D #7EA01D

monochromatic

#0A1538 #14296C #1D3DA0 #2651D4 #5778E1

Accessibility & contrast

On white

9.43

#1D3DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1D3DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3DA0

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3DA0	#FFFFFF	#000000	##FFFFFF
##1D3DA0	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA3

Deuteranopia (green-blind)

#00409E

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d3da0;
/* rgb */ color: rgb(29, 61, 160);
/* oklch */ color: oklch(40.4% 0.165 265.5);

Tailwind

colors: {
  custom: {
    50: '#7172bd',
    500: '#1d3da0',
    950: '#000000',
  },
}

SCSS

$custom: #1d3da0;
$custom-light: #7172bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3da0",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 160
  },
  "hsl": {
    "h": 225.344,
    "s": 69.312,
    "l": 37.059
  },
  "oklch": {
    "l": 0.40441,
    "c": 0.16477,
    "h": 265.5
  },
  "luminance": 0.06137
}

Semantic roles & 50–950 ramp

primary

#1D3DA0

secondary

#C4A955

accent

#C13CEC

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3DA0

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

Preview Lab → · Contrast checker → · Palette generator →