#21387F#21387F

#21387F is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.7% C 0.124 H 266.7°. Best body text is #FFFFFF at 10.84:1 contrast (WCAG AA passes).

Color values

HEX	#21387F
RGB	rgb(33, 56, 127)
HSL	hsl(225, 59%, 31%)
HSV	hsv(225, 74%, 50%)
CMYK	cmyk(74%, 55.9%, 0%, 50.2%)
CIE-LAB	lab(25.81, 17.42, -42.85)
CIE-LCH	lch(25.81, 46.26, 292.12°)
OKLab	oklab(36.68% -0.0072 -0.1233)
OKLCH	oklch(36.68% 0.124 266.7)
XYZ	xyz(5.8708, 4.6834, 20.6691)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21387F #7F6821

analogous

#21677F #21387F #39217F

triadic

#21387F #7F2138 #387F21

tetradic

#21387F #7F2167 #7F6821 #217F39

square

#21387F #7F2167 #7F6821 #217F39

split-complementary

#21387F #7F3921 #677F21

monochromatic

#080D1E #14234E #21387F #2E4DB0 #4A6BD0

Accessibility & contrast

On white

10.84

#21387F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#21387F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21387F

10.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21387F	#FFFFFF	#000000	##FFFFFF
##21387F	1.00	10.84	1.94	10.84
#FFFFFF	10.84	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#024281

Deuteranopia (green-blind)

#00397E

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #21387f;
/* rgb */ color: rgb(33, 56, 127);
/* oklch */ color: oklch(36.7% 0.124 266.7);

Tailwind

colors: {
  custom: {
    50: '#6a6ea5',
    500: '#21387f',
    950: '#000000',
  },
}

SCSS

$custom: #21387f;
$custom-light: #6a6ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#21387f",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 127
  },
  "hsl": {
    "h": 225.319,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.36684,
    "c": 0.12356,
    "h": 266.7
  },
  "luminance": 0.04684
}

Semantic roles & 50–950 ramp

primary

#21387F

secondary

#B2984A

accent

#BC46E2

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #21387F

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

Preview Lab → · Contrast checker → · Palette generator →