#1D55AD#1D55AD

#1D55AD is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.6% C 0.153 H 259.5°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#1D55AD
RGB	rgb(29, 85, 173)
HSL	hsl(217, 71%, 40%)
HSV	hsv(217, 83%, 68%)
CMYK	cmyk(83.2%, 50.9%, 0%, 32.2%)
CIE-LAB	lab(37.43, 15.51, -52.08)
CIE-LCH	lch(37.43, 54.34, 286.58°)
OKLab	oklab(46.56% -0.0278 -0.15)
OKLCH	oklch(46.56% 0.153 259.5)
XYZ	xyz(11.2953, 9.7740, 40.8183)
Luminance	0.0978 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D55AD #AD751D

analogous

#1D9DAD #1D55AD #2D1DAD

triadic

#1D55AD #AD1D55 #55AD1D

tetradic

#1D55AD #AD1D9D #AD751D #1DAD2D

square

#1D55AD #AD1D9D #AD751D #1DAD2D

split-complementary

#1D55AD #AD2D1D #9DAD1D

monochromatic

#0B2144 #143B79 #1D55AD #2C70DC #6093E4

Accessibility & contrast

On white

7.11

#1D55AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#1D55AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D55AD

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D55AD	#FFFFFF	#000000	##FFFFFF
##1D55AD	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C5FB0

Deuteranopia (green-blind)

#0052AB

Tritanopia (blue-blind)

#006A79

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1d55ad;
/* rgb */ color: rgb(29, 85, 173);
/* oklch */ color: oklch(46.6% 0.153 259.5);

Tailwind

colors: {
  custom: {
    50: '#7284c6',
    500: '#1d55ad',
    950: '#000000',
  },
}

SCSS

$custom: #1d55ad;
$custom-light: #7284c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d55ad",
  "rgb": {
    "r": 29,
    "g": 85,
    "b": 173
  },
  "hsl": {
    "h": 216.667,
    "s": 71.287,
    "l": 39.608
  },
  "oklch": {
    "l": 0.46564,
    "c": 0.15256,
    "h": 259.5
  },
  "luminance": 0.09775
}

Semantic roles & 50–950 ramp

primary

#1D55AD

secondary

#C99F5D

accent

#A83AEE

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1D55AD

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

Preview Lab → · Contrast checker → · Palette generator →