#1536B4#1536B4

#1536B4 is a dark, highly saturated blue. Relative luminance 0.061; OKLCH L 40.9% C 0.201 H 265.5°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#1536B4
RGB	rgb(21, 54, 180)
HSL	hsl(228, 79%, 39%)
HSV	hsv(228, 88%, 71%)
CMYK	cmyk(88.3%, 70%, 0%, 29.4%)
CIE-LAB	lab(29.64, 38.23, -68.97)
CIE-LCH	lch(29.64, 78.86, 299.00°)
OKLab	oklab(40.86% -0.0157 -0.2)
OKLCH	oklch(40.86% 0.201 265.5)
XYZ	xyz(9.8637, 6.0918, 43.8271)
Luminance	0.0609 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.08

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1536B4 #B49315

analogous

#1586B4 #1536B4 #4415B4

triadic

#1536B4 #B41536 #36B415

tetradic

#1536B4 #B41586 #B49315 #15B444

square

#1536B4 #B41586 #B49315 #15B444

split-complementary

#1536B4 #B44415 #86B415

monochromatic

#081546 #0F267D #1536B4 #214AE5 #5877EC

Accessibility & contrast

On white

9.47

#1536B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1536B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1536B4

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1536B4	#FFFFFF	#000000	##FFFFFF
##1536B4	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB8

Deuteranopia (green-blind)

#003EB2

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1536b4;
/* rgb */ color: rgb(21, 54, 180);
/* oklch */ color: oklch(40.9% 0.201 265.5);

Tailwind

colors: {
  custom: {
    50: '#756dcc',
    500: '#1536b4',
    950: '#000000',
  },
}

SCSS

$custom: #1536b4;
$custom-light: #756dcc;
$custom-dark: #000000;

JSON

{
  "hex": "#1536b4",
  "rgb": {
    "r": 21,
    "g": 54,
    "b": 180
  },
  "hsl": {
    "h": 227.547,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.40862,
    "c": 0.20066,
    "h": 265.5
  },
  "luminance": 0.06093
}

Semantic roles & 50–950 ramp

primary

#1536B4

secondary

#CFB656

accent

#CD32F6

background

#F7F6FC

surface

#EEEBF9

border

#C9C6D2

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1536B4

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

Preview Lab → · Contrast checker → · Palette generator →