#1537A1#1537A1

#1537A1 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.1% C 0.175 H 265.0°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#1537A1
RGB	rgb(21, 55, 161)
HSL	hsl(225, 77%, 36%)
HSV	hsv(225, 87%, 63%)
CMYK	cmyk(87%, 65.8%, 0%, 36.9%)
CIE-LAB	lab(28.02, 30.36, -60.24)
CIE-LCH	lch(28.02, 67.46, 296.74°)
OKLab	oklab(39.11% -0.0153 -0.1746)
OKLCH	oklch(39.11% 0.175 265)
XYZ	xyz(8.1062, 5.4640, 34.3387)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1537A1 #A17F15

analogous

#157DA1 #1537A1 #3915A1

triadic

#1537A1 #A11537 #37A115

tetradic

#1537A1 #A1157D #A17F15 #15A139

square

#1537A1 #A1157D #A17F15 #15A139

split-complementary

#1537A1 #A13915 #7DA115

monochromatic

#071235 #0E256B #1537A1 #1C49D7 #4970E7

Accessibility & contrast

On white

10.03

#1537A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1537A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1537A1

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1537A1	#FFFFFF	#000000	##FFFFFF
##1537A1	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A4

Deuteranopia (green-blind)

#003C9F

Tritanopia (blue-blind)

#005467

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1537a1;
/* rgb */ color: rgb(21, 55, 161);
/* oklch */ color: oklch(39.1% 0.175 265.0);

Tailwind

colors: {
  custom: {
    50: '#6f6dbe',
    500: '#1537a1',
    950: '#000000',
  },
}

SCSS

$custom: #1537a1;
$custom-light: #6f6dbe;
$custom-dark: #000000;

JSON

{
  "hex": "#1537a1",
  "rgb": {
    "r": 21,
    "g": 55,
    "b": 161
  },
  "hsl": {
    "h": 225.429,
    "s": 76.923,
    "l": 35.686
  },
  "oklch": {
    "l": 0.3911,
    "c": 0.17525,
    "h": 265
  },
  "luminance": 0.05465
}

Semantic roles & 50–950 ramp

primary

#1537A1

secondary

#C8AA49

accent

#C534F3

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1537A1

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

Preview Lab → · Contrast checker → · Palette generator →