#1D55AA#1D55AA

#1D55AA is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.3% C 0.148 H 259.0°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#1D55AA
RGB	rgb(29, 85, 170)
HSL	hsl(216, 71%, 39%)
HSV	hsv(216, 83%, 67%)
CMYK	cmyk(82.9%, 50%, 0%, 33.3%)
CIE-LAB	lab(37.22, 14.31, -50.64)
CIE-LCH	lch(37.22, 52.63, 285.78°)
OKLab	oklab(46.34% -0.0282 -0.1458)
OKLCH	oklch(46.34% 0.148 259)
XYZ	xyz(11.0082, 9.6591, 39.3066)
Luminance	0.0966 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D55AA #AA721D

analogous

#1D9CAA #1D55AA #2C1DAA

triadic

#1D55AA #AA1D55 #55AA1D

tetradic

#1D55AA #AA1D9C #AA721D #1DAA2C

square

#1D55AA #AA1D9C #AA721D #1DAA2C

split-complementary

#1D55AA #AA2C1D #9CAA1D

monochromatic

#0B2141 #143B76 #1D55AA #2A70DB #5E93E4

Accessibility & contrast

On white

7.16

#1D55AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#1D55AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D55AA

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D55AA	#FFFFFF	#000000	##FFFFFF
##1D55AA	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#215EAD

Deuteranopia (green-blind)

#0052A8

Tritanopia (blue-blind)

#006A77

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1d55aa;
/* rgb */ color: rgb(29, 85, 170);
/* oklch */ color: oklch(46.3% 0.148 259.0);

Tailwind

colors: {
  custom: {
    50: '#7284c4',
    500: '#1d55aa',
    950: '#000000',
  },
}

SCSS

$custom: #1d55aa;
$custom-light: #7284c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d55aa",
  "rgb": {
    "r": 29,
    "g": 85,
    "b": 170
  },
  "hsl": {
    "h": 216.17,
    "s": 70.854,
    "l": 39.02
  },
  "oklch": {
    "l": 0.46336,
    "c": 0.14848,
    "h": 259
  },
  "luminance": 0.0966
}

Semantic roles & 50–950 ramp

primary

#1D55AA

secondary

#C89D5B

accent

#A63AEE

background

#F7F8FC

surface

#EDEFF8

border

#C8CAD1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1D55AA

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

Preview Lab → · Contrast checker → · Palette generator →