#1D55A6#1D55A6

#1D55A6 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.0% C 0.143 H 258.4°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#1D55A6
RGB	rgb(29, 85, 166)
HSL	hsl(215, 70%, 38%)
HSV	hsv(215, 83%, 65%)
CMYK	cmyk(82.5%, 48.8%, 0%, 34.9%)
CIE-LAB	lab(36.95, 12.72, -48.71)
CIE-LCH	lch(36.95, 50.34, 284.63°)
OKLab	oklab(46.04% -0.0288 -0.1401)
OKLCH	oklch(46.04% 0.143 258.4)
XYZ	xyz(10.6356, 9.5101, 37.3441)
Luminance	0.0951 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D55A6 #A66E1D

analogous

#1D99A6 #1D55A6 #291DA6

triadic

#1D55A6 #A61D55 #55A61D

tetradic

#1D55A6 #A61D99 #A66E1D #1DA629

square

#1D55A6 #A61D99 #A66E1D #1DA629

split-complementary

#1D55A6 #A6291D #99A61D

monochromatic

#0B203E #143A72 #1D55A6 #2770D9 #5B92E2

Accessibility & contrast

On white

7.24

#1D55A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#1D55A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D55A6

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D55A6	#FFFFFF	#000000	##FFFFFF
##1D55A6	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#265DA9

Deuteranopia (green-blind)

#0051A4

Tritanopia (blue-blind)

#006975

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1d55a6;
/* rgb */ color: rgb(29, 85, 166);
/* oklch */ color: oklch(46.0% 0.143 258.4);

Tailwind

colors: {
  custom: {
    50: '#7184c1',
    500: '#1d55a6',
    950: '#000000',
  },
}

SCSS

$custom: #1d55a6;
$custom-light: #7184c1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d55a6",
  "rgb": {
    "r": 29,
    "g": 85,
    "b": 166
  },
  "hsl": {
    "h": 215.474,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.46037,
    "c": 0.14301,
    "h": 258.4
  },
  "luminance": 0.09511
}

Semantic roles & 50–950 ramp

primary

#1D55A6

secondary

#C69959

accent

#A43BED

background

#F7F8FB

surface

#EDEFF7

border

#C8CAD0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D55A6

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

Preview Lab → · Contrast checker → · Palette generator →