#1D55A8#1D55A8

#1D55A8 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.2% C 0.146 H 258.7°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#1D55A8
RGB	rgb(29, 85, 168)
HSL	hsl(216, 71%, 39%)
HSV	hsv(216, 83%, 66%)
CMYK	cmyk(82.7%, 49.4%, 0%, 34.1%)
CIE-LAB	lab(37.09, 13.51, -49.68)
CIE-LCH	lch(37.09, 51.48, 285.22°)
OKLab	oklab(46.19% -0.0285 -0.1429)
OKLCH	oklch(46.19% 0.146 258.7)
XYZ	xyz(10.8205, 9.5840, 38.3178)
Luminance	0.0959 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D55A8 #A8701D

analogous

#1D9AA8 #1D55A8 #2A1DA8

triadic

#1D55A8 #A81D55 #55A81D

tetradic

#1D55A8 #A81D9A #A8701D #1DA82A

square

#1D55A8 #A81D9A #A8701D #1DA82A

split-complementary

#1D55A8 #A82A1D #9AA81D

monochromatic

#0B2040 #143B74 #1D55A8 #2870DA #5C93E3

Accessibility & contrast

On white

7.20

#1D55A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#1D55A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D55A8

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D55A8	#FFFFFF	#000000	##FFFFFF
##1D55A8	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#245EAB

Deuteranopia (green-blind)

#0051A6

Tritanopia (blue-blind)

#006976

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1d55a8;
/* rgb */ color: rgb(29, 85, 168);
/* oklch */ color: oklch(46.2% 0.146 258.7);

Tailwind

colors: {
  custom: {
    50: '#7184c2',
    500: '#1d55a8',
    950: '#000000',
  },
}

SCSS

$custom: #1d55a8;
$custom-light: #7184c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d55a8",
  "rgb": {
    "r": 29,
    "g": 85,
    "b": 168
  },
  "hsl": {
    "h": 215.827,
    "s": 70.558,
    "l": 38.627
  },
  "oklch": {
    "l": 0.46186,
    "c": 0.14575,
    "h": 258.7
  },
  "luminance": 0.09585
}

Semantic roles & 50–950 ramp

primary

#1D55A8

secondary

#C79B5A

accent

#A53AED

background

#F7F8FC

surface

#EDEFF8

border

#C8CAD1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D55A8

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

Preview Lab → · Contrast checker → · Palette generator →