#2137A0#2137A0

#2137A0 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.5% C 0.171 H 268.0°. Best body text is #FFFFFF at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#2137A0
RGB	rgb(33, 55, 160)
HSL	hsl(230, 66%, 38%)
HSV	hsv(230, 79%, 63%)
CMYK	cmyk(79.4%, 65.6%, 0%, 37.3%)
CIE-LAB	lab(28.36, 30.94, -59.06)
CIE-LCH	lch(28.36, 66.67, 297.65°)
OKLab	oklab(39.46% -0.0061 -0.1709)
OKLCH	oklch(39.46% 0.171 268)
XYZ	xyz(8.3363, 5.5928, 33.8911)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2137A0 #A08A21

analogous

#2177A0 #2137A0 #4A21A0

triadic

#2137A0 #A02137 #37A021

tetradic

#2137A0 #A02177 #A08A21 #21A04A

square

#2137A0 #A02177 #A08A21 #21A04A

split-complementary

#2137A0 #A04A21 #77A021

monochromatic

#0C143B #17266D #2137A0 #2B48D3 #5E74DE

Accessibility & contrast

On white

9.91

#2137A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#2137A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2137A0

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2137A0	#FFFFFF	#000000	##FFFFFF
##2137A0	1.00	9.91	2.12	9.91
#FFFFFF	9.91	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A3

Deuteranopia (green-blind)

#003D9E

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2137a0;
/* rgb */ color: rgb(33, 55, 160);
/* oklch */ color: oklch(39.5% 0.171 268.0);

Tailwind

colors: {
  custom: {
    50: '#726dbd',
    500: '#2137a0',
    950: '#000000',
  },
}

SCSS

$custom: #2137a0;
$custom-light: #726dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#2137a0",
  "rgb": {
    "r": 33,
    "g": 55,
    "b": 160
  },
  "hsl": {
    "h": 229.606,
    "s": 65.803,
    "l": 37.843
  },
  "oklch": {
    "l": 0.39457,
    "c": 0.17102,
    "h": 268
  },
  "luminance": 0.05594
}

Semantic roles & 50–950 ramp

primary

#2137A0

secondary

#C2B05B

accent

#CB3FE9

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #2137A0

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

Preview Lab → · Contrast checker → · Palette generator →