#1F36A6#1F36A6

#1F36A6 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.8% C 0.181 H 267.6°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#1F36A6
RGB	rgb(31, 54, 166)
HSL	hsl(230, 69%, 39%)
HSV	hsv(230, 81%, 65%)
CMYK	cmyk(81.3%, 67.5%, 0%, 34.9%)
CIE-LAB	lab(28.59, 33.67, -62.30)
CIE-LCH	lch(28.59, 70.82, 298.39°)
OKLab	oklab(39.78% -0.0076 -0.1804)
OKLCH	oklch(39.78% 0.181 267.6)
XYZ	xyz(8.7648, 5.6818, 36.7038)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F36A6 #A68F1F

analogous

#1F79A6 #1F36A6 #4B1FA6

triadic

#1F36A6 #A61F36 #36A61F

tetradic

#1F36A6 #A61F79 #A68F1F #1FA64B

square

#1F36A6 #A61F79 #A68F1F #1FA64B

split-complementary

#1F36A6 #A64B1F #79A61F

monochromatic

#0C143F #152572 #1F36A6 #2B48D7 #5E75E1

Accessibility & contrast

On white

9.83

#1F36A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1F36A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F36A6

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F36A6	#FFFFFF	#000000	##FFFFFF
##1F36A6	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA9

Deuteranopia (green-blind)

#003DA4

Tritanopia (blue-blind)

#005469

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f36a6;
/* rgb */ color: rgb(31, 54, 166);
/* oklch */ color: oklch(39.8% 0.181 267.6);

Tailwind

colors: {
  custom: {
    50: '#736dc1',
    500: '#1f36a6',
    950: '#000000',
  },
}

SCSS

$custom: #1f36a6;
$custom-light: #736dc1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f36a6",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 166
  },
  "hsl": {
    "h": 229.778,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.39777,
    "c": 0.18061,
    "h": 267.6
  },
  "luminance": 0.05683
}

Semantic roles & 50–950 ramp

primary

#1F36A6

secondary

#C5B35B

accent

#CE3CEB

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #1F36A6

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

Preview Lab → · Contrast checker → · Palette generator →