#2137A4#2137A4

#2137A4 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.8% C 0.176 H 268.0°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#2137A4
RGB	rgb(33, 55, 164)
HSL	hsl(230, 66%, 39%)
HSV	hsv(230, 80%, 64%)
CMYK	cmyk(79.9%, 66.5%, 0%, 35.7%)
CIE-LAB	lab(28.73, 32.45, -60.87)
CIE-LCH	lch(28.73, 68.97, 298.06°)
OKLab	oklab(39.84% -0.0062 -0.1762)
OKLCH	oklch(39.84% 0.176 268)
XYZ	xyz(8.6919, 5.7350, 35.7636)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2137A4 #A48E21

analogous

#2178A4 #2137A4 #4C21A4

triadic

#2137A4 #A42137 #37A421

tetradic

#2137A4 #A42178 #A48E21 #21A44C

square

#2137A4 #A42178 #A48E21 #21A44C

split-complementary

#2137A4 #A44C21 #78A421

monochromatic

#0C153E #172671 #2137A4 #2D49D5 #6076DF

Accessibility & contrast

On white

9.78

#2137A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#2137A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2137A4

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2137A4	#FFFFFF	#000000	##FFFFFF
##2137A4	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA7

Deuteranopia (green-blind)

#003EA2

Tritanopia (blue-blind)

#005468

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2137a4;
/* rgb */ color: rgb(33, 55, 164);
/* oklch */ color: oklch(39.8% 0.176 268.0);

Tailwind

colors: {
  custom: {
    50: '#736dc0',
    500: '#2137a4',
    950: '#000000',
  },
}

SCSS

$custom: #2137a4;
$custom-light: #736dc0;
$custom-dark: #000000;

JSON

{
  "hex": "#2137a4",
  "rgb": {
    "r": 33,
    "g": 55,
    "b": 164
  },
  "hsl": {
    "h": 229.924,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.39844,
    "c": 0.17631,
    "h": 268
  },
  "luminance": 0.05736
}

Semantic roles & 50–950 ramp

primary

#2137A4

secondary

#C4B35D

accent

#CD3EE9

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2137A4

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

Preview Lab → · Contrast checker → · Palette generator →