#2131BC#2131BC

#2131BC is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 41.3% C 0.213 H 268.4°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#2131BC
RGB	rgb(33, 49, 188)
HSL	hsl(234, 70%, 43%)
HSV	hsv(234, 82%, 74%)
CMYK	cmyk(82.4%, 73.9%, 0%, 26.3%)
CIE-LAB	lab(29.79, 44.82, -73.47)
CIE-LCH	lch(29.79, 86.06, 301.38°)
OKLab	oklab(41.33% -0.006 -0.2129)
OKLCH	oklch(41.33% 0.213 268.4)
XYZ	xyz(10.7995, 6.1495, 48.1850)
Luminance	0.0615 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2131BC #BCAC21

analogous

#217FBC #2131BC #5E21BC

triadic

#2131BC #BC2131 #31BC21

tetradic

#2131BC #BC217F #BCAC21 #21BC5E

square

#2131BC #BC217F #BCAC21 #21BC5E

split-complementary

#2131BC #BC5E21 #7FBC21

monochromatic

#0F1654 #182388 #2131BC #3D4EDD #717DE6

Accessibility & contrast

On white

9.42

#2131BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#2131BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2131BC

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2131BC	#FFFFFF	#000000	##FFFFFF
##2131BC	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EC0

Deuteranopia (green-blind)

#003EBA

Tritanopia (blue-blind)

#005A74

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2131bc;
/* rgb */ color: rgb(33, 49, 188);
/* oklch */ color: oklch(41.3% 0.213 268.4);

Tailwind

colors: {
  custom: {
    50: '#7a6ad2',
    500: '#2131bc',
    950: '#000000',
  },
}

SCSS

$custom: #2131bc;
$custom-light: #7a6ad2;
$custom-dark: #000000;

JSON

{
  "hex": "#2131bc",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 188
  },
  "hsl": {
    "h": 233.806,
    "s": 70.136,
    "l": 43.333
  },
  "oklch": {
    "l": 0.41329,
    "c": 0.213,
    "h": 268.4
  },
  "luminance": 0.06151
}

Semantic roles & 50–950 ramp

primary

#2131BC

secondary

#CDC36C

accent

#DB3BED

background

#F8F6FD

surface

#EFEBFA

border

#CAC6D3

text

#0B0614

muted

#7C7A83

Preview Lab

Preview with #2131BC

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

Preview Lab → · Contrast checker → · Palette generator →