#3128B2#3128B2

#3128B2 is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 39.8% C 0.205 H 274.6°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#3128B2
RGB	rgb(49, 40, 178)
HSL	hsl(244, 63%, 43%)
HSV	hsv(244, 78%, 70%)
CMYK	cmyk(72.5%, 77.5%, 0%, 30.2%)
CIE-LAB	lab(27.80, 47.70, -70.78)
CIE-LCH	lch(27.80, 85.36, 303.98°)
OKLab	oklab(39.84% 0.0165 -0.2047)
OKLCH	oklch(39.84% 0.205 274.6)
XYZ	xyz(10.0586, 5.3839, 42.6199)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3128B2 #A9B228

analogous

#2864B2 #3128B2 #7628B2

triadic

#3128B2 #B23128 #28B231

tetradic

#3128B2 #B22864 #A9B228 #28B276

square

#3128B2 #B22864 #A9B228 #28B276

split-complementary

#3128B2 #B27628 #64B228

monochromatic

#15124E #231D80 #3128B2 #4C43D5 #7C75E0

Accessibility & contrast

On white

10.11

#3128B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#3128B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3128B2

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3128B2	#FFFFFF	#000000	##FFFFFF
##3128B2	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B6

Deuteranopia (green-blind)

#003BB0

Tritanopia (blue-blind)

#00516C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3128b2;
/* rgb */ color: rgb(49, 40, 178);
/* oklch */ color: oklch(39.8% 0.205 274.6);

Tailwind

colors: {
  custom: {
    50: '#7e65ca',
    500: '#3128b2',
    950: '#000000',
  },
}

SCSS

$custom: #3128b2;
$custom-light: #7e65ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3128b2",
  "rgb": {
    "r": 49,
    "g": 40,
    "b": 178
  },
  "hsl": {
    "h": 243.913,
    "s": 63.303,
    "l": 42.745
  },
  "oklch": {
    "l": 0.39837,
    "c": 0.20538,
    "h": 274.6
  },
  "luminance": 0.05385
}

Semantic roles & 50–950 ramp

primary

#3128B2

secondary

#C1C76F

accent

#E641DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3128B2

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

Preview Lab → · Contrast checker → · Palette generator →