#21437D#21437D

#21437D is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.0% C 0.106 H 260.4°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#21437D
RGB	rgb(33, 67, 125)
HSL	hsl(218, 58%, 31%)
HSV	hsv(218, 74%, 49%)
CMYK	cmyk(73.6%, 46.4%, 0%, 51%)
CIE-LAB	lab(28.95, 8.98, -36.55)
CIE-LCH	lch(28.95, 37.63, 283.81°)
OKLab	oklab(39.03% -0.0178 -0.1046)
OKLCH	oklch(39.03% 0.106 260.4)
XYZ	xyz(6.3347, 5.8176, 20.1871)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21437D #7D5B21

analogous

#21717D #21437D #2D217D

triadic

#21437D #7D2143 #437D21

tetradic

#21437D #7D2171 #7D5B21 #217D2D

square

#21437D #7D2171 #7D5B21 #217D2D

split-complementary

#21437D #7D2D21 #717D21

monochromatic

#070F1C #14294D #21437D #2E5DAD #497BCF

Accessibility & contrast

On white

9.71

#21437D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#21437D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21437D

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21437D	#FFFFFF	#000000	##FFFFFF
##21437D	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26497F

Deuteranopia (green-blind)

#14407C

Tritanopia (blue-blind)

#00515A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #21437d;
/* rgb */ color: rgb(33, 67, 125);
/* oklch */ color: oklch(39.0% 0.106 260.4);

Tailwind

colors: {
  custom: {
    50: '#6976a3',
    500: '#21437d',
    950: '#000000',
  },
}

SCSS

$custom: #21437d;
$custom-light: #6976a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21437d",
  "rgb": {
    "r": 33,
    "g": 67,
    "b": 125
  },
  "hsl": {
    "h": 217.826,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.3903,
    "c": 0.1061,
    "h": 260.4
  },
  "luminance": 0.05818
}

Semantic roles & 50–950 ramp

primary

#21437D

secondary

#B08A4A

accent

#A846E1

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #21437D

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

Preview Lab → · Contrast checker → · Palette generator →