#2137A8#2137A8

#2137A8 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.2% C 0.182 H 268.0°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#2137A8
RGB	rgb(33, 55, 168)
HSL	hsl(230, 67%, 39%)
HSV	hsv(230, 80%, 66%)
CMYK	cmyk(80.4%, 67.3%, 0%, 34.1%)
CIE-LAB	lab(29.11, 33.94, -62.66)
CIE-LCH	lch(29.11, 71.26, 298.45°)
OKLab	oklab(40.24% -0.0065 -0.1814)
OKLCH	oklch(40.24% 0.182 268)
XYZ	xyz(9.0588, 5.8818, 37.6961)
Luminance	0.0588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2137A8 #A89221

analogous

#217BA8 #2137A8 #4F21A8

triadic

#2137A8 #A82137 #37A821

tetradic

#2137A8 #A8217B #A89221 #21A84F

square

#2137A8 #A8217B #A89221 #21A84F

split-complementary

#2137A8 #A84F21 #7BA821

monochromatic

#0D1642 #172675 #2137A8 #304BD6 #6377E0

Accessibility & contrast

On white

9.65

#2137A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#2137A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2137A8

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2137A8	#FFFFFF	#000000	##FFFFFF
##2137A8	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BAC

Deuteranopia (green-blind)

#003EA6

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2137a8;
/* rgb */ color: rgb(33, 55, 168);
/* oklch */ color: oklch(40.2% 0.182 268.0);

Tailwind

colors: {
  custom: {
    50: '#746ec3',
    500: '#2137a8',
    950: '#000000',
  },
}

SCSS

$custom: #2137a8;
$custom-light: #746ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#2137a8",
  "rgb": {
    "r": 33,
    "g": 55,
    "b": 168
  },
  "hsl": {
    "h": 230.222,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.40236,
    "c": 0.18155,
    "h": 268
  },
  "luminance": 0.05883
}

Semantic roles & 50–950 ramp

primary

#2137A8

secondary

#C5B55F

accent

#CE3EEA

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2137A8

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

Preview Lab → · Contrast checker → · Palette generator →