#1D53A5#1D53A5

#1D53A5 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.5% C 0.144 H 259.0°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#1D53A5
RGB	rgb(29, 83, 165)
HSL	hsl(216, 70%, 38%)
HSV	hsv(216, 82%, 65%)
CMYK	cmyk(82.4%, 49.7%, 0%, 35.3%)
CIE-LAB	lab(36.30, 13.65, -49.16)
CIE-LCH	lch(36.30, 51.02, 285.52°)
OKLab	oklab(45.51% -0.0275 -0.1414)
OKLCH	oklch(45.51% 0.144 259)
XYZ	xyz(10.3890, 9.1631, 36.8111)
Luminance	0.0916 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D53A5 #A56F1D

analogous

#1D97A5 #1D53A5 #2B1DA5

triadic

#1D53A5 #A51D53 #53A51D

tetradic

#1D53A5 #A51D97 #A56F1D #1DA52B

square

#1D53A5 #A51D97 #A56F1D #1DA52B

split-complementary

#1D53A5 #A52B1D #97A51D

monochromatic

#0B1F3D #143971 #1D53A5 #266DD9 #5A90E2

Accessibility & contrast

On white

7.41

#1D53A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1D53A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D53A5

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D53A5	#FFFFFF	#000000	##FFFFFF
##1D53A5	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#225CA8

Deuteranopia (green-blind)

#0050A3

Tritanopia (blue-blind)

#006774

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1d53a5;
/* rgb */ color: rgb(29, 83, 165);
/* oklch */ color: oklch(45.5% 0.144 259.0);

Tailwind

colors: {
  custom: {
    50: '#7182c0',
    500: '#1d53a5',
    950: '#000000',
  },
}

SCSS

$custom: #1d53a5;
$custom-light: #7182c0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d53a5",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 165
  },
  "hsl": {
    "h": 216.176,
    "s": 70.103,
    "l": 38.039
  },
  "oklch": {
    "l": 0.45514,
    "c": 0.14409,
    "h": 259
  },
  "luminance": 0.09164
}

Semantic roles & 50–950 ramp

primary

#1D53A5

secondary

#C69A58

accent

#A63BED

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D53A5

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

Preview Lab → · Contrast checker → · Palette generator →