#1D55A7#1D55A7

#1D55A7 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.1% C 0.144 H 258.5°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#1D55A7
RGB	rgb(29, 85, 167)
HSL	hsl(216, 70%, 38%)
HSV	hsv(216, 83%, 65%)
CMYK	cmyk(82.6%, 49.1%, 0%, 34.5%)
CIE-LAB	lab(37.02, 13.11, -49.19)
CIE-LCH	lch(37.02, 50.91, 284.93°)
OKLab	oklab(46.11% -0.0287 -0.1415)
OKLCH	oklch(46.11% 0.144 258.5)
XYZ	xyz(10.7277, 9.5469, 37.8291)
Luminance	0.0955 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D55A7 #A76F1D

analogous

#1D9AA7 #1D55A7 #2A1DA7

triadic

#1D55A7 #A71D55 #55A71D

tetradic

#1D55A7 #A71D9A #A76F1D #1DA72A

square

#1D55A7 #A71D9A #A76F1D #1DA72A

split-complementary

#1D55A7 #A72A1D #9AA71D

monochromatic

#0B203F #143A73 #1D55A7 #2870DA #5C92E3

Accessibility & contrast

On white

7.22

#1D55A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#1D55A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D55A7

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D55A7	#FFFFFF	#000000	##FFFFFF
##1D55A7	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#255EAA

Deuteranopia (green-blind)

#0051A5

Tritanopia (blue-blind)

#006976

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1d55a7;
/* rgb */ color: rgb(29, 85, 167);
/* oklch */ color: oklch(46.1% 0.144 258.5);

Tailwind

colors: {
  custom: {
    50: '#7184c2',
    500: '#1d55a7',
    950: '#000000',
  },
}

SCSS

$custom: #1d55a7;
$custom-light: #7184c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d55a7",
  "rgb": {
    "r": 29,
    "g": 85,
    "b": 167
  },
  "hsl": {
    "h": 215.652,
    "s": 70.408,
    "l": 38.431
  },
  "oklch": {
    "l": 0.46111,
    "c": 0.14438,
    "h": 258.5
  },
  "luminance": 0.09548
}

Semantic roles & 50–950 ramp

primary

#1D55A7

secondary

#C79A59

accent

#A53BED

background

#F7F8FC

surface

#EDEFF8

border

#C8CAD1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D55A7

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

Preview Lab → · Contrast checker → · Palette generator →