#1640A1#1640A1

#1640A1 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.9% C 0.164 H 263.3°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#1640A1
RGB	rgb(22, 64, 161)
HSL	hsl(222, 76%, 36%)
HSV	hsv(222, 86%, 63%)
CMYK	cmyk(86.3%, 60.2%, 0%, 36.9%)
CIE-LAB	lab(30.42, 24.33, -56.30)
CIE-LCH	lch(30.42, 61.33, 293.37°)
OKLab	oklab(40.91% -0.0192 -0.1629)
OKLCH	oklch(40.91% 0.164 263.3)
XYZ	xyz(8.5950, 6.4095, 34.4955)
Luminance	0.0641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1640A1 #A17716

analogous

#1685A1 #1640A1 #3216A1

triadic

#1640A1 #A11640 #40A116

tetradic

#1640A1 #A11685 #A17716 #16A132

square

#1640A1 #A11685 #A17716 #16A132

split-complementary

#1640A1 #A13216 #85A116

monochromatic

#071535 #0F2B6B #1640A1 #1D55D7 #4B7AE6

Accessibility & contrast

On white

9.20

#1640A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1640A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1640A1

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1640A1	#FFFFFF	#000000	##FFFFFF
##1640A1	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00419F

Tritanopia (blue-blind)

#00596A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1640a1;
/* rgb */ color: rgb(22, 64, 161);
/* oklch */ color: oklch(40.9% 0.164 263.3);

Tailwind

colors: {
  custom: {
    50: '#6f74be',
    500: '#1640a1',
    950: '#000000',
  },
}

SCSS

$custom: #1640a1;
$custom-light: #6f74be;
$custom-dark: #000000;

JSON

{
  "hex": "#1640a1",
  "rgb": {
    "r": 22,
    "g": 64,
    "b": 161
  },
  "hsl": {
    "h": 221.871,
    "s": 75.956,
    "l": 35.882
  },
  "oklch": {
    "l": 0.40905,
    "c": 0.16404,
    "h": 263.3
  },
  "luminance": 0.06411
}

Semantic roles & 50–950 ramp

primary

#1640A1

secondary

#C8A24B

accent

#B935F3

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1640A1

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

Preview Lab → · Contrast checker → · Palette generator →