#3123BC#3123BC

#3123BC is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.4% C 0.221 H 274.2°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#3123BC
RGB	rgb(49, 35, 188)
HSL	hsl(245, 69%, 44%)
HSV	hsv(245, 81%, 74%)
CMYK	cmyk(73.9%, 81.4%, 0%, 26.3%)
CIE-LAB	lab(28.07, 53.26, -76.28)
CIE-LCH	lch(28.07, 93.03, 304.92°)
OKLab	oklab(40.35% 0.016 -0.2206)
OKLCH	oklch(40.35% 0.221 274.2)
XYZ	xyz(10.9417, 5.4848, 48.0492)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3123BC #AEBC23

analogous

#2361BC #3123BC #7D23BC

triadic

#3123BC #BC3123 #23BC31

tetradic

#3123BC #BC2361 #AEBC23 #23BC7D

square

#3123BC #BC2361 #AEBC23 #23BC7D

split-complementary

#3123BC #BC7D23 #61BC23

monochromatic

#161055 #241988 #3123BC #4F41DC #7F74E5

Accessibility & contrast

On white

10.01

#3123BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#3123BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3123BC

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3123BC	#FFFFFF	#000000	##FFFFFF
##3123BC	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049C0

Deuteranopia (green-blind)

#003BB9

Tritanopia (blue-blind)

#005371

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3123bc;
/* rgb */ color: rgb(49, 35, 188);
/* oklch */ color: oklch(40.4% 0.221 274.2);

Tailwind

colors: {
  custom: {
    50: '#8063d2',
    500: '#3123bc',
    950: '#000000',
  },
}

SCSS

$custom: #3123bc;
$custom-light: #8063d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3123bc",
  "rgb": {
    "r": 49,
    "g": 35,
    "b": 188
  },
  "hsl": {
    "h": 245.49,
    "s": 68.61,
    "l": 43.725
  },
  "oklch": {
    "l": 0.40354,
    "c": 0.22118,
    "h": 274.2
  },
  "luminance": 0.05486
}

Semantic roles & 50–950 ramp

primary

#3123BC

secondary

#C4CC6F

accent

#EB3CDB

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0514

muted

#7D7A83

Preview Lab

Preview with #3123BC

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

Preview Lab → · Contrast checker → · Palette generator →