#1537CA#1537CA

#1537CA is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.4% C 0.226 H 265.5°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#1537CA
RGB	rgb(21, 55, 202)
HSL	hsl(229, 81%, 44%)
HSV	hsv(229, 90%, 79%)
CMYK	cmyk(89.6%, 72.8%, 0%, 20.8%)
CIE-LAB	lab(32.16, 45.56, -77.78)
CIE-LCH	lch(32.16, 90.14, 300.36°)
OKLab	oklab(43.36% -0.0176 -0.2256)
OKLCH	oklch(43.36% 0.226 265.5)
XYZ	xyz(12.3324, 7.1545, 56.5966)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1537CA #CAA815

analogous

#1591CA #1537CA #4D15CA

triadic

#1537CA #CA1537 #37CA15

tetradic

#1537CA #CA1591 #CAA815 #15CA4D

square

#1537CA #CA1591 #CAA815 #15CA4D

split-complementary

#1537CA #CA4D15 #91CA15

monochromatic

#09195B #0F2893 #1537CA #3255EA #6A83EF

Accessibility & contrast

On white

8.64

#1537CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1537CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1537CA

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1537CA	#FFFFFF	#000000	##FFFFFF
##1537CA	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054CE

Deuteranopia (green-blind)

#0043C7

Tritanopia (blue-blind)

#00627D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1537ca;
/* rgb */ color: rgb(21, 55, 202);
/* oklch */ color: oklch(43.4% 0.226 265.5);

Tailwind

colors: {
  custom: {
    50: '#7b6edc',
    500: '#1537ca',
    950: '#000000',
  },
}

SCSS

$custom: #1537ca;
$custom-light: #7b6edc;
$custom-dark: #000000;

JSON

{
  "hex": "#1537ca",
  "rgb": {
    "r": 21,
    "g": 55,
    "b": 202
  },
  "hsl": {
    "h": 228.729,
    "s": 81.166,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43357,
    "c": 0.22631,
    "h": 265.5
  },
  "luminance": 0.07156
}

Semantic roles & 50–950 ramp

primary

#1537CA

secondary

#D5C066

accent

#D230F8

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0C0715

muted

#7D7A83

Preview Lab

Preview with #1537CA

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

Preview Lab → · Contrast checker → · Palette generator →