#1D53AA#1D53AA

#1D53AA is a mid, vivid blue. Relative luminance 0.093; OKLCH L 45.9% C 0.151 H 259.8°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#1D53AA
RGB	rgb(29, 83, 170)
HSL	hsl(217, 71%, 39%)
HSV	hsv(217, 83%, 67%)
CMYK	cmyk(82.9%, 51.2%, 0%, 33.3%)
CIE-LAB	lab(36.65, 15.64, -51.57)
CIE-LCH	lch(36.65, 53.89, 286.87°)
OKLab	oklab(45.89% -0.0267 -0.1485)
OKLCH	oklch(45.89% 0.151 259.8)
XYZ	xyz(10.8530, 9.3487, 39.2549)
Luminance	0.0935 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D53AA #AA741D

analogous

#1D9AAA #1D53AA #2E1DAA

triadic

#1D53AA #AA1D53 #53AA1D

tetradic

#1D53AA #AA1D9A #AA741D #1DAA2E

square

#1D53AA #AA1D9A #AA741D #1DAA2E

split-complementary

#1D53AA #AA2E1D #9AAA1D

monochromatic

#0B2041 #143976 #1D53AA #2A6DDB #5E91E4

Accessibility & contrast

On white

7.32

#1D53AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#1D53AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D53AA

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D53AA	#FFFFFF	#000000	##FFFFFF
##1D53AA	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A5DAD

Deuteranopia (green-blind)

#0050A8

Tritanopia (blue-blind)

#006876

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1d53aa;
/* rgb */ color: rgb(29, 83, 170);
/* oklch */ color: oklch(45.9% 0.151 259.8);

Tailwind

colors: {
  custom: {
    50: '#7282c4',
    500: '#1d53aa',
    950: '#000000',
  },
}

SCSS

$custom: #1d53aa;
$custom-light: #7282c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d53aa",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 170
  },
  "hsl": {
    "h": 217.021,
    "s": 70.854,
    "l": 39.02
  },
  "oklch": {
    "l": 0.45894,
    "c": 0.15094,
    "h": 259.8
  },
  "luminance": 0.0935
}

Semantic roles & 50–950 ramp

primary

#1D53AA

secondary

#C89E5B

accent

#A93AEE

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1D53AA

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

Preview Lab → · Contrast checker → · Palette generator →