#3128B1#3128B1

#3128B1 is a dark, highly saturated blue. Relative luminance 0.053; OKLCH L 39.7% C 0.204 H 274.7°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#3128B1
RGB	rgb(49, 40, 177)
HSL	hsl(244, 63%, 43%)
HSV	hsv(244, 77%, 69%)
CMYK	cmyk(72.3%, 77.4%, 0%, 30.6%)
CIE-LAB	lab(27.69, 47.39, -70.36)
CIE-LCH	lch(27.69, 84.83, 303.96°)
OKLab	oklab(39.73% 0.0168 -0.2035)
OKLCH	oklch(39.73% 0.204 274.7)
XYZ	xyz(9.9586, 5.3439, 42.0931)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3128B1 #A8B128

analogous

#2863B1 #3128B1 #7628B1

triadic

#3128B1 #B13128 #28B131

tetradic

#3128B1 #B12863 #A8B128 #28B176

square

#3128B1 #B12863 #A8B128 #28B176

split-complementary

#3128B1 #B17628 #63B128

monochromatic

#15114D #231D7F #3128B1 #4C42D4 #7B74E0

Accessibility & contrast

On white

10.15

#3128B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#3128B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3128B1

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3128B1	#FFFFFF	#000000	##FFFFFF
##3128B1	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B5

Deuteranopia (green-blind)

#003BAF

Tritanopia (blue-blind)

#00516B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #3128b1;
/* rgb */ color: rgb(49, 40, 177);
/* oklch */ color: oklch(39.7% 0.204 274.7);

Tailwind

colors: {
  custom: {
    50: '#7d65ca',
    500: '#3128b1',
    950: '#000000',
  },
}

SCSS

$custom: #3128b1;
$custom-light: #7d65ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3128b1",
  "rgb": {
    "r": 49,
    "g": 40,
    "b": 177
  },
  "hsl": {
    "h": 243.942,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.39728,
    "c": 0.20419,
    "h": 274.7
  },
  "luminance": 0.05345
}

Semantic roles & 50–950 ramp

primary

#3128B1

secondary

#C1C76E

accent

#E642DB

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3128B1

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

Preview Lab → · Contrast checker → · Palette generator →