#1631CD#1631CD

#1631CD is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.8% C 0.235 H 266.1°. Best body text is #FFFFFF at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#1631CD
RGB	rgb(22, 49, 205)
HSL	hsl(231, 81%, 45%)
HSV	hsv(231, 89%, 80%)
CMYK	cmyk(89.3%, 76.1%, 0%, 19.6%)
CIE-LAB	lab(31.29, 50.08, -80.97)
CIE-LCH	lch(31.29, 95.20, 301.74°)
OKLab	oklab(42.84% -0.0162 -0.2348)
OKLCH	oklch(42.84% 0.235 266.1)
XYZ	xyz(12.4448, 6.7734, 58.3972)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.66

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1631CD #CDB216

analogous

#168CCD #1631CD #5716CD

triadic

#1631CD #CD1631 #31CD16

tetradic

#1631CD #CD168C #CDB216 #16CD57

square

#1631CD #CD168C #CDB216 #16CD57

split-complementary

#1631CD #CD5716 #8CCD16

monochromatic

#0A175E #102496 #1631CD #3751EA #6E81EF

Accessibility & contrast

On white

8.92

#1631CD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#1631CD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1631CD

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1631CD	#FFFFFF	#000000	##FFFFFF
##1631CD	1.00	8.92	2.36	8.92
#FFFFFF	8.92	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053D1

Deuteranopia (green-blind)

#0040CA

Tritanopia (blue-blind)

#00607D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1631cd;
/* rgb */ color: rgb(22, 49, 205);
/* oklch */ color: oklch(42.8% 0.235 266.1);

Tailwind

colors: {
  custom: {
    50: '#7c6bde',
    500: '#1631cd',
    950: '#000000',
  },
}

SCSS

$custom: #1631cd;
$custom-light: #7c6bde;
$custom-dark: #000000;

JSON

{
  "hex": "#1631cd",
  "rgb": {
    "r": 22,
    "g": 49,
    "b": 205
  },
  "hsl": {
    "h": 231.148,
    "s": 80.617,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42838,
    "c": 0.23536,
    "h": 266.1
  },
  "luminance": 0.06775
}

Semantic roles & 50–950 ramp

primary

#1631CD

secondary

#D5C569

accent

#DA31F7

background

#F8F6FD

surface

#F0EBFB

border

#CBC6D4

text

#0C0715

muted

#7D7A83

Preview Lab

Preview with #1631CD

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

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