#1D53A7#1D53A7

#1D53A7 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.7% C 0.147 H 259.3°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#1D53A7
RGB	rgb(29, 83, 167)
HSL	hsl(217, 70%, 38%)
HSV	hsv(217, 83%, 65%)
CMYK	cmyk(82.6%, 50.3%, 0%, 34.5%)
CIE-LAB	lab(36.44, 14.45, -50.13)
CIE-LCH	lch(36.44, 52.17, 286.08°)
OKLab	oklab(45.67% -0.0272 -0.1443)
OKLCH	oklch(45.67% 0.147 259.3)
XYZ	xyz(10.5724, 9.2365, 37.7773)
Luminance	0.0924 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D53A7 #A7711D

analogous

#1D98A7 #1D53A7 #2C1DA7

triadic

#1D53A7 #A71D53 #53A71D

tetradic

#1D53A7 #A71D98 #A7711D #1DA72C

square

#1D53A7 #A71D98 #A7711D #1DA72C

split-complementary

#1D53A7 #A72C1D #98A71D

monochromatic

#0B1F3F #143973 #1D53A7 #286DDA #5C91E3

Accessibility & contrast

On white

7.37

#1D53A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#1D53A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D53A7

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D53A7	#FFFFFF	#000000	##FFFFFF
##1D53A7	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F5CAA

Deuteranopia (green-blind)

#0050A5

Tritanopia (blue-blind)

#006775

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1d53a7;
/* rgb */ color: rgb(29, 83, 167);
/* oklch */ color: oklch(45.7% 0.147 259.3);

Tailwind

colors: {
  custom: {
    50: '#7182c2',
    500: '#1d53a7',
    950: '#000000',
  },
}

SCSS

$custom: #1d53a7;
$custom-light: #7182c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d53a7",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 167
  },
  "hsl": {
    "h": 216.522,
    "s": 70.408,
    "l": 38.431
  },
  "oklch": {
    "l": 0.45665,
    "c": 0.14684,
    "h": 259.3
  },
  "luminance": 0.09238
}

Semantic roles & 50–950 ramp

primary

#1D53A7

secondary

#C79C59

accent

#A73BED

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D53A7

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

Preview Lab → · Contrast checker → · Palette generator →