#1631B4#1631B4

#1631B4 is a dark, highly saturated blue. Relative luminance 0.057; OKLCH L 40.1% C 0.206 H 266.2°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#1631B4
RGB	rgb(22, 49, 180)
HSL	hsl(230, 78%, 40%)
HSV	hsv(230, 88%, 71%)
CMYK	cmyk(87.8%, 72.8%, 0%, 29.4%)
CIE-LAB	lab(28.54, 41.38, -70.79)
CIE-LCH	lch(28.54, 82.00, 300.31°)
OKLab	oklab(40.08% -0.0136 -0.2053)
OKLCH	oklch(40.08% 0.206 266.2)
XYZ	xyz(9.6645, 5.6613, 43.7545)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.16

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1631B4 #B49916

analogous

#1680B4 #1631B4 #4A16B4

triadic

#1631B4 #B41631 #31B416

tetradic

#1631B4 #B41680 #B49916 #16B44A

square

#1631B4 #B41680 #B49916 #16B44A

split-complementary

#1631B4 #B44A16 #80B416

monochromatic

#091347 #0F227D #1631B4 #2344E4 #5A72EB

Accessibility & contrast

On white

9.85

#1631B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1631B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1631B4

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1631B4	#FFFFFF	#000000	##FFFFFF
##1631B4	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB8

Deuteranopia (green-blind)

#003CB2

Tritanopia (blue-blind)

#00576F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1631b4;
/* rgb */ color: rgb(22, 49, 180);
/* oklch */ color: oklch(40.1% 0.206 266.2);

Tailwind

colors: {
  custom: {
    50: '#766acc',
    500: '#1631b4',
    950: '#000000',
  },
}

SCSS

$custom: #1631b4;
$custom-light: #766acc;
$custom-dark: #000000;

JSON

{
  "hex": "#1631b4",
  "rgb": {
    "r": 22,
    "g": 49,
    "b": 180
  },
  "hsl": {
    "h": 229.747,
    "s": 78.218,
    "l": 39.608
  },
  "oklch": {
    "l": 0.40075,
    "c": 0.20576,
    "h": 266.2
  },
  "luminance": 0.05662
}

Semantic roles & 50–950 ramp

primary

#1631B4

secondary

#CEBA58

accent

#D433F5

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0A0614

muted

#7C7A82

Preview Lab

Preview with #1631B4

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

Preview Lab → · Contrast checker → · Palette generator →