#1F36A9#1F36A9

#1F36A9 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.1% C 0.184 H 267.6°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#1F36A9
RGB	rgb(31, 54, 169)
HSL	hsl(230, 69%, 39%)
HSV	hsv(230, 82%, 66%)
CMYK	cmyk(81.7%, 68%, 0%, 33.7%)
CIE-LAB	lab(28.88, 34.79, -63.63)
CIE-LCH	lch(28.88, 72.53, 298.67°)
OKLab	oklab(40.08% -0.0078 -0.1843)
OKLCH	oklch(40.08% 0.184 267.6)
XYZ	xyz(9.0432, 5.7931, 38.1700)
Luminance	0.0579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F36A9 #A9921F

analogous

#1F7BA9 #1F36A9 #4D1FA9

triadic

#1F36A9 #A91F36 #36A91F

tetradic

#1F36A9 #A91F7B #A9921F #1FA94D

square

#1F36A9 #A91F7B #A9921F #1FA94D

split-complementary

#1F36A9 #A94D1F #7BA91F

monochromatic

#0C1542 #162575 #1F36A9 #2D49D8 #6076E2

Accessibility & contrast

On white

9.73

#1F36A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1F36A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F36A9

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F36A9	#FFFFFF	#000000	##FFFFFF
##1F36A9	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BAD

Deuteranopia (green-blind)

#003EA7

Tritanopia (blue-blind)

#00556B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f36a9;
/* rgb */ color: rgb(31, 54, 169);
/* oklch */ color: oklch(40.1% 0.184 267.6);

Tailwind

colors: {
  custom: {
    50: '#746dc4',
    500: '#1f36a9',
    950: '#000000',
  },
}

SCSS

$custom: #1f36a9;
$custom-light: #746dc4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f36a9",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 169
  },
  "hsl": {
    "h": 230,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40076,
    "c": 0.18449,
    "h": 267.6
  },
  "luminance": 0.05794
}

Semantic roles & 50–950 ramp

primary

#1F36A9

secondary

#C7B55D

accent

#CF3CEC

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1F36A9

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

Preview Lab → · Contrast checker → · Palette generator →