#3128B9#3128B9

#3128B9 is a dark, highly saturated blue. Relative luminance 0.057; OKLCH L 40.6% C 0.214 H 274.0°. Best body text is #FFFFFF at 9.84:1 contrast (WCAG AA passes).

Color values

HEX	#3128B9
RGB	rgb(49, 40, 185)
HSL	hsl(244, 64%, 44%)
HSV	hsv(244, 78%, 73%)
CMYK	cmyk(73.5%, 78.4%, 0%, 27.5%)
CIE-LAB	lab(28.57, 49.91, -73.68)
CIE-LCH	lch(28.57, 88.99, 304.11°)
OKLab	oklab(40.6% 0.0149 -0.2131)
OKLCH	oklch(40.6% 0.214 274)
XYZ	xyz(10.7795, 5.6722, 46.4163)
Luminance	0.0567 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3128B9 #B0B928

analogous

#2868B9 #3128B9 #7A28B9

triadic

#3128B9 #B93128 #28B931

tetradic

#3128B9 #B92868 #B0B928 #28B97A

square

#3128B9 #B92868 #B0B928 #28B97A

split-complementary

#3128B9 #B97A28 #68B928

monochromatic

#161254 #241D87 #3128B9 #5047D7 #8079E2

Accessibility & contrast

On white

9.84

#3128B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#3128B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3128B9

9.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3128B9	#FFFFFF	#000000	##FFFFFF
##3128B9	1.00	9.84	2.13	9.84
#FFFFFF	9.84	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ABD

Deuteranopia (green-blind)

#003CB6

Tritanopia (blue-blind)

#005470

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3128b9;
/* rgb */ color: rgb(49, 40, 185);
/* oklch */ color: oklch(40.6% 0.214 274.0);

Tailwind

colors: {
  custom: {
    50: '#7f65cf',
    500: '#3128b9',
    950: '#000000',
  },
}

SCSS

$custom: #3128b9;
$custom-light: #7f65cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3128b9",
  "rgb": {
    "r": 49,
    "g": 40,
    "b": 185
  },
  "hsl": {
    "h": 243.724,
    "s": 64.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.40601,
    "c": 0.21365,
    "h": 274
  },
  "luminance": 0.05673
}

Semantic roles & 50–950 ramp

primary

#3128B9

secondary

#C5CA73

accent

#E740DD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3128B9

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

Preview Lab → · Contrast checker → · Palette generator →