#2131A5#2131A5

#2131A5 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.9% C 0.184 H 269.0°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#2131A5
RGB	rgb(33, 49, 165)
HSL	hsl(233, 67%, 39%)
HSV	hsv(233, 80%, 65%)
CMYK	cmyk(80%, 70.3%, 0%, 35.3%)
CIE-LAB	lab(27.40, 36.67, -63.67)
CIE-LCH	lch(27.40, 73.48, 299.94°)
OKLab	oklab(38.9% -0.0033 -0.1844)
OKLCH	oklch(38.9% 0.184 269)
XYZ	xyz(8.5147, 5.2356, 36.1518)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2131A5 #A59521

analogous

#2173A5 #2131A5 #5321A5

triadic

#2131A5 #A52131 #31A521

tetradic

#2131A5 #A52173 #A59521 #21A553

square

#2131A5 #A52173 #A59521 #21A553

split-complementary

#2131A5 #A55321 #73A521

monochromatic

#0D133F #172272 #2131A5 #2E42D5 #6170DF

Accessibility & contrast

On white

10.26

#2131A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#2131A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2131A5

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2131A5	#FFFFFF	#000000	##FFFFFF
##2131A5	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A9

Deuteranopia (green-blind)

#003AA3

Tritanopia (blue-blind)

#005167

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2131a5;
/* rgb */ color: rgb(33, 49, 165);
/* oklch */ color: oklch(38.9% 0.184 269.0);

Tailwind

colors: {
  custom: {
    50: '#7469c1',
    500: '#2131a5',
    950: '#000000',
  },
}

SCSS

$custom: #2131a5;
$custom-light: #7469c1;
$custom-dark: #000000;

JSON

{
  "hex": "#2131a5",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 165
  },
  "hsl": {
    "h": 232.727,
    "s": 66.667,
    "l": 38.824
  },
  "oklch": {
    "l": 0.38899,
    "c": 0.18444,
    "h": 269
  },
  "luminance": 0.05237
}

Semantic roles & 50–950 ramp

primary

#2131A5

secondary

#C4B85E

accent

#D53EEA

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2131A5

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

Preview Lab → · Contrast checker → · Palette generator →