#3128B3#3128B3

#3128B3 is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 39.9% C 0.207 H 274.5°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#3128B3
RGB	rgb(49, 40, 179)
HSL	hsl(244, 63%, 43%)
HSV	hsv(244, 78%, 70%)
CMYK	cmyk(72.6%, 77.7%, 0%, 29.8%)
CIE-LAB	lab(27.91, 48.02, -71.20)
CIE-LCH	lch(27.91, 85.88, 304.00°)
OKLab	oklab(39.95% 0.0163 -0.2059)
OKLCH	oklch(39.95% 0.207 274.5)
XYZ	xyz(10.1594, 5.4242, 43.1507)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3128B3 #AAB328

analogous

#2864B3 #3128B3 #7628B3

triadic

#3128B3 #B33128 #28B331

tetradic

#3128B3 #B32864 #AAB328 #28B376

square

#3128B3 #B32864 #AAB328 #28B376

split-complementary

#3128B3 #B37628 #64B328

monochromatic

#16124F #231D81 #3128B3 #4D43D5 #7C75E0

Accessibility & contrast

On white

10.07

#3128B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#3128B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3128B3

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3128B3	#FFFFFF	#000000	##FFFFFF
##3128B3	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B7

Deuteranopia (green-blind)

#003BB1

Tritanopia (blue-blind)

#00526D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3128b3;
/* rgb */ color: rgb(49, 40, 179);
/* oklch */ color: oklch(39.9% 0.207 274.5);

Tailwind

colors: {
  custom: {
    50: '#7e65cb',
    500: '#3128b3',
    950: '#000000',
  },
}

SCSS

$custom: #3128b3;
$custom-light: #7e65cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3128b3",
  "rgb": {
    "r": 49,
    "g": 40,
    "b": 179
  },
  "hsl": {
    "h": 243.885,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.39945,
    "c": 0.20656,
    "h": 274.5
  },
  "luminance": 0.05425
}

Semantic roles & 50–950 ramp

primary

#3128B3

secondary

#C2C86F

accent

#E641DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3128B3

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

Preview Lab → · Contrast checker → · Palette generator →