#3631B9#3631B9

#3631B9 is a dark, highly saturated blue. Relative luminance 0.065; OKLCH L 42.1% C 0.204 H 274.8°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#3631B9
RGB	rgb(54, 49, 185)
HSL	hsl(242, 58%, 46%)
HSV	hsv(242, 74%, 73%)
CMYK	cmyk(70.8%, 73.5%, 0%, 27.5%)
CIE-LAB	lab(30.60, 45.53, -70.31)
CIE-LCH	lch(30.60, 83.77, 302.93°)
OKLab	oklab(42.12% 0.017 -0.2033)
OKLCH	oklch(42.12% 0.204 274.8)
XYZ	xyz(11.3737, 6.4826, 46.5414)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.94

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3631B9 #B4B931

analogous

#3170B9 #3631B9 #7A31B9

triadic

#3631B9 #B93631 #31B936

tetradic

#3631B9 #B93170 #B4B931 #31B97A

square

#3631B9 #B93170 #B4B931 #31B97A

split-complementary

#3631B9 #B97A31 #70B931

monochromatic

#1A1758 #282489 #3631B9 #5A55D2 #8986DF

Accessibility & contrast

On white

9.14

#3631B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3631B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3631B9

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3631B9	#FFFFFF	#000000	##FFFFFF
##3631B9	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBD

Deuteranopia (green-blind)

#0042B7

Tritanopia (blue-blind)

#005872

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3631b9;
/* rgb */ color: rgb(54, 49, 185);
/* oklch */ color: oklch(42.1% 0.204 274.8);

Tailwind

colors: {
  custom: {
    50: '#806bcf',
    500: '#3631b9',
    950: '#000000',
  },
}

SCSS

$custom: #3631b9;
$custom-light: #806bcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3631b9",
  "rgb": {
    "r": 54,
    "g": 49,
    "b": 185
  },
  "hsl": {
    "h": 242.206,
    "s": 58.12,
    "l": 45.882
  },
  "oklch": {
    "l": 0.42118,
    "c": 0.20403,
    "h": 274.8
  },
  "luminance": 0.06484
}

Semantic roles & 50–950 ramp

primary

#3631B9

secondary

#C6C87D

accent

#E146DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3631B9

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

Preview Lab → · Contrast checker → · Palette generator →