#2137A5#2137A5

#2137A5 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.9% C 0.178 H 268.0°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#2137A5
RGB	rgb(33, 55, 165)
HSL	hsl(230, 67%, 39%)
HSV	hsv(230, 80%, 65%)
CMYK	cmyk(80%, 66.7%, 0%, 35.3%)
CIE-LAB	lab(28.83, 32.82, -61.31)
CIE-LCH	lch(28.83, 69.55, 298.16°)
OKLab	oklab(39.94% -0.0063 -0.1775)
OKLCH	oklch(39.94% 0.178 268)
XYZ	xyz(8.7826, 5.7713, 36.2411)
Luminance	0.0577 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2137A5 #A58F21

analogous

#2179A5 #2137A5 #4D21A5

triadic

#2137A5 #A52137 #37A521

tetradic

#2137A5 #A52179 #A58F21 #21A54D

square

#2137A5 #A52179 #A58F21 #21A54D

split-complementary

#2137A5 #A54D21 #79A521

monochromatic

#0D153F #172672 #2137A5 #2E4AD5 #6176DF

Accessibility & contrast

On white

9.75

#2137A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#2137A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2137A5

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2137A5	#FFFFFF	#000000	##FFFFFF
##2137A5	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA8

Deuteranopia (green-blind)

#003EA3

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2137a5;
/* rgb */ color: rgb(33, 55, 165);
/* oklch */ color: oklch(39.9% 0.178 268.0);

Tailwind

colors: {
  custom: {
    50: '#746ec1',
    500: '#2137a5',
    950: '#000000',
  },
}

SCSS

$custom: #2137a5;
$custom-light: #746ec1;
$custom-dark: #000000;

JSON

{
  "hex": "#2137a5",
  "rgb": {
    "r": 33,
    "g": 55,
    "b": 165
  },
  "hsl": {
    "h": 230,
    "s": 66.667,
    "l": 38.824
  },
  "oklch": {
    "l": 0.39942,
    "c": 0.17763,
    "h": 268
  },
  "luminance": 0.05772
}

Semantic roles & 50–950 ramp

primary

#2137A5

secondary

#C4B35E

accent

#CD3EEA

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2137A5

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

Preview Lab → · Contrast checker → · Palette generator →