#21437C#21437C

#21437C is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.0% C 0.105 H 260.1°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#21437C
RGB	rgb(33, 67, 124)
HSL	hsl(218, 58%, 31%)
HSV	hsv(218, 73%, 49%)
CMYK	cmyk(73.4%, 46%, 0%, 51.4%)
CIE-LAB	lab(28.88, 8.58, -36.03)
CIE-LCH	lch(28.88, 37.03, 283.40°)
OKLab	oklab(38.96% -0.018 -0.1031)
OKLCH	oklch(38.96% 0.105 260.1)
XYZ	xyz(6.2711, 5.7922, 19.8524)
Luminance	0.0579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21437C #7C5A21

analogous

#21707C #21437C #2C217C

triadic

#21437C #7C2143 #437C21

tetradic

#21437C #7C2170 #7C5A21 #217C2C

square

#21437C #7C2170 #7C5A21 #217C2C

split-complementary

#21437C #7C2C21 #707C21

monochromatic

#070F1B #14294C #21437C #2E5DAC #497BCF

Accessibility & contrast

On white

9.73

#21437C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#21437C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21437C

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21437C	#FFFFFF	#000000	##FFFFFF
##21437C	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27497E

Deuteranopia (green-blind)

#16407B

Tritanopia (blue-blind)

#005059

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #21437c;
/* rgb */ color: rgb(33, 67, 124);
/* oklch */ color: oklch(39.0% 0.105 260.1);

Tailwind

colors: {
  custom: {
    50: '#6976a2',
    500: '#21437c',
    950: '#000000',
  },
}

SCSS

$custom: #21437c;
$custom-light: #6976a2;
$custom-dark: #000000;

JSON

{
  "hex": "#21437c",
  "rgb": {
    "r": 33,
    "g": 67,
    "b": 124
  },
  "hsl": {
    "h": 217.582,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.38959,
    "c": 0.10462,
    "h": 260.1
  },
  "luminance": 0.05793
}

Semantic roles & 50–950 ramp

primary

#21437C

secondary

#AF894A

accent

#A747E1

background

#F6F7FA

surface

#EBEDF3

border

#C6C8CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #21437C

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

Preview Lab → · Contrast checker → · Palette generator →