#3123BB#3123BB

#3123BB is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 40.2% C 0.220 H 274.2°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#3123BB
RGB	rgb(49, 35, 187)
HSL	hsl(246, 68%, 44%)
HSV	hsv(246, 81%, 73%)
CMYK	cmyk(73.8%, 81.3%, 0%, 26.7%)
CIE-LAB	lab(27.96, 52.96, -75.88)
CIE-LCH	lch(27.96, 92.53, 304.91°)
OKLab	oklab(40.24% 0.0163 -0.2194)
OKLCH	oklch(40.24% 0.22 274.2)
XYZ	xyz(10.8343, 5.4418, 47.4835)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3123BB #ADBB23

analogous

#2361BB #3123BB #7D23BB

triadic

#3123BB #BB3123 #23BB31

tetradic

#3123BB #BB2361 #ADBB23 #23BB7D

square

#3123BB #BB2361 #ADBB23 #23BB7D

split-complementary

#3123BB #BB7D23 #61BB23

monochromatic

#161054 #231987 #3123BB #4E40DB #7E74E5

Accessibility & contrast

On white

10.05

#3123BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#3123BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3123BB

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3123BB	#FFFFFF	#000000	##FFFFFF
##3123BB	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049BF

Deuteranopia (green-blind)

#003BB8

Tritanopia (blue-blind)

#005370

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3123bb;
/* rgb */ color: rgb(49, 35, 187);
/* oklch */ color: oklch(40.2% 0.220 274.2);

Tailwind

colors: {
  custom: {
    50: '#8063d1',
    500: '#3123bb',
    950: '#000000',
  },
}

SCSS

$custom: #3123bb;
$custom-light: #8063d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3123bb",
  "rgb": {
    "r": 49,
    "g": 35,
    "b": 187
  },
  "hsl": {
    "h": 245.526,
    "s": 68.468,
    "l": 43.529
  },
  "oklch": {
    "l": 0.4024,
    "c": 0.22004,
    "h": 274.2
  },
  "luminance": 0.05443
}

Semantic roles & 50–950 ramp

primary

#3123BB

secondary

#C3CC6E

accent

#EB3CDB

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0514

muted

#7D7A83

Preview Lab

Preview with #3123BB

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

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