#1D4EA1#1D4EA1

#1D4EA1 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.1% C 0.145 H 260.4°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#1D4EA1
RGB	rgb(29, 78, 161)
HSL	hsl(218, 69%, 37%)
HSV	hsv(218, 82%, 63%)
CMYK	cmyk(82%, 51.6%, 0%, 36.9%)
CIE-LAB	lab(34.56, 15.41, -49.56)
CIE-LCH	lch(34.56, 51.90, 287.27°)
OKLab	oklab(44.1% -0.0243 -0.1427)
OKLCH	oklch(44.1% 0.145 260.4)
XYZ	xyz(9.6618, 8.2820, 34.8007)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4EA1 #A1701D

analogous

#1D90A1 #1D4EA1 #2E1DA1

triadic

#1D4EA1 #A11D4E #4EA11D

tetradic

#1D4EA1 #A11D90 #A1701D #1DA12E

square

#1D4EA1 #A11D90 #A1701D #1DA12E

split-complementary

#1D4EA1 #A12E1D #90A11D

monochromatic

#0A1C39 #14356D #1D4EA1 #2667D5 #588BE1

Accessibility & contrast

On white

7.90

#1D4EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1D4EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4EA1

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4EA1	#FFFFFF	#000000	##FFFFFF
##1D4EA1	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1858A4

Deuteranopia (green-blind)

#004C9F

Tritanopia (blue-blind)

#006270

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1d4ea1;
/* rgb */ color: rgb(29, 78, 161);
/* oklch */ color: oklch(44.1% 0.145 260.4);

Tailwind

colors: {
  custom: {
    50: '#707ebd',
    500: '#1d4ea1',
    950: '#000000',
  },
}

SCSS

$custom: #1d4ea1;
$custom-light: #707ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4ea1",
  "rgb": {
    "r": 29,
    "g": 78,
    "b": 161
  },
  "hsl": {
    "h": 217.727,
    "s": 69.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.44097,
    "c": 0.1448,
    "h": 260.4
  },
  "luminance": 0.08283
}

Semantic roles & 50–950 ramp

primary

#1D4EA1

secondary

#C49B55

accent

#AB3CEC

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D4EA1

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

Preview Lab → · Contrast checker → · Palette generator →