#21437E#21437E

#21437E is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.1% C 0.108 H 260.6°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#21437E
RGB	rgb(33, 67, 126)
HSL	hsl(218, 58%, 31%)
HSV	hsv(218, 74%, 49%)
CMYK	cmyk(73.8%, 46.8%, 0%, 50.6%)
CIE-LAB	lab(29.01, 9.38, -37.07)
CIE-LCH	lch(29.01, 38.23, 284.20°)
OKLab	oklab(39.1% -0.0176 -0.1061)
OKLCH	oklch(39.1% 0.108 260.6)
XYZ	xyz(6.3989, 5.8433, 20.5253)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21437E #7E5C21

analogous

#21717E #21437E #2D217E

triadic

#21437E #7E2143 #437E21

tetradic

#21437E #7E2171 #7E5C21 #217E2D

square

#21437E #7E2171 #7E5C21 #217E2D

split-complementary

#21437E #7E2D21 #717E21

monochromatic

#080F1D #14294E #21437E #2E5DAE #4A7BD0

Accessibility & contrast

On white

9.68

#21437E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#21437E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21437E

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21437E	#FFFFFF	#000000	##FFFFFF
##21437E	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254980

Deuteranopia (green-blind)

#13407D

Tritanopia (blue-blind)

#00515A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #21437e;
/* rgb */ color: rgb(33, 67, 126);
/* oklch */ color: oklch(39.1% 0.108 260.6);

Tailwind

colors: {
  custom: {
    50: '#6976a4',
    500: '#21437e',
    950: '#000000',
  },
}

SCSS

$custom: #21437e;
$custom-light: #6976a4;
$custom-dark: #000000;

JSON

{
  "hex": "#21437e",
  "rgb": {
    "r": 33,
    "g": 67,
    "b": 126
  },
  "hsl": {
    "h": 218.065,
    "s": 58.491,
    "l": 31.176
  },
  "oklch": {
    "l": 0.39103,
    "c": 0.10758,
    "h": 260.6
  },
  "luminance": 0.05844
}

Semantic roles & 50–950 ramp

primary

#21437E

secondary

#B18B4A

accent

#A946E2

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #21437E

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

Preview Lab → · Contrast checker → · Palette generator →