#1533A1#1533A1

#1533A1 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.4% C 0.180 H 265.7°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#1533A1
RGB	rgb(21, 51, 161)
HSL	hsl(227, 77%, 36%)
HSV	hsv(227, 87%, 63%)
CMYK	cmyk(87%, 68.3%, 0%, 36.9%)
CIE-LAB	lab(27.02, 33.01, -61.89)
CIE-LCH	lch(27.02, 70.14, 298.08°)
OKLab	oklab(38.38% -0.0136 -0.1794)
OKLCH	oklch(38.38% 0.18 265.7)
XYZ	xyz(7.9238, 5.0993, 34.2779)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1533A1 #A18315

analogous

#1579A1 #1533A1 #3D15A1

triadic

#1533A1 #A11533 #33A115

tetradic

#1533A1 #A11579 #A18315 #15A13D

square

#1533A1 #A11579 #A18315 #15A13D

split-complementary

#1533A1 #A13D15 #79A115

monochromatic

#071135 #0E226B #1533A1 #1C44D7 #496BE7

Accessibility & contrast

On white

10.40

#1533A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1533A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1533A1

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1533A1	#FFFFFF	#000000	##FFFFFF
##1533A1	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A4

Deuteranopia (green-blind)

#00399F

Tritanopia (blue-blind)

#005165

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1533a1;
/* rgb */ color: rgb(21, 51, 161);
/* oklch */ color: oklch(38.4% 0.180 265.7);

Tailwind

colors: {
  custom: {
    50: '#706abe',
    500: '#1533a1',
    950: '#000000',
  },
}

SCSS

$custom: #1533a1;
$custom-light: #706abe;
$custom-dark: #000000;

JSON

{
  "hex": "#1533a1",
  "rgb": {
    "r": 21,
    "g": 51,
    "b": 161
  },
  "hsl": {
    "h": 227.143,
    "s": 76.923,
    "l": 35.686
  },
  "oklch": {
    "l": 0.38375,
    "c": 0.17992,
    "h": 265.7
  },
  "luminance": 0.051
}

Semantic roles & 50–950 ramp

primary

#1533A1

secondary

#C8AD49

accent

#CB34F3

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1533A1

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

Preview Lab → · Contrast checker → · Palette generator →