#1D4FA1#1D4FA1

#1D4FA1 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.3% C 0.144 H 260.0°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#1D4FA1
RGB	rgb(29, 79, 161)
HSL	hsl(217, 69%, 37%)
HSV	hsv(217, 82%, 63%)
CMYK	cmyk(82%, 50.9%, 0%, 36.9%)
CIE-LAB	lab(34.85, 14.73, -49.10)
CIE-LCH	lch(34.85, 51.26, 286.70°)
OKLab	oklab(44.32% -0.025 -0.1413)
OKLCH	oklch(44.32% 0.144 260)
XYZ	xyz(9.7334, 8.4252, 34.8245)
Luminance	0.0843 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4FA1 #A16F1D

analogous

#1D91A1 #1D4FA1 #2D1DA1

triadic

#1D4FA1 #A11D4F #4FA11D

tetradic

#1D4FA1 #A11D91 #A16F1D #1DA12D

square

#1D4FA1 #A11D91 #A16F1D #1DA12D

split-complementary

#1D4FA1 #A12D1D #91A11D

monochromatic

#0A1C39 #14366D #1D4FA1 #2668D5 #588CE1

Accessibility & contrast

On white

7.82

#1D4FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1D4FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4FA1

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4FA1	#FFFFFF	#000000	##FFFFFF
##1D4FA1	1.00	7.82	2.69	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B58A4

Deuteranopia (green-blind)

#004C9F

Tritanopia (blue-blind)

#006370

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1d4fa1;
/* rgb */ color: rgb(29, 79, 161);
/* oklch */ color: oklch(44.3% 0.144 260.0);

Tailwind

colors: {
  custom: {
    50: '#707fbd',
    500: '#1d4fa1',
    950: '#000000',
  },
}

SCSS

$custom: #1d4fa1;
$custom-light: #707fbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4fa1",
  "rgb": {
    "r": 29,
    "g": 79,
    "b": 161
  },
  "hsl": {
    "h": 217.273,
    "s": 69.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.44318,
    "c": 0.14355,
    "h": 260
  },
  "luminance": 0.08426
}

Semantic roles & 50–950 ramp

primary

#1D4FA1

secondary

#C49A55

accent

#A93CEC

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D4FA1

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

Preview Lab → · Contrast checker → · Palette generator →