#21388C#21388C

#21388C is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.8% C 0.142 H 267.4°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#21388C
RGB	rgb(33, 56, 140)
HSL	hsl(227, 62%, 34%)
HSV	hsv(227, 76%, 55%)
CMYK	cmyk(76.4%, 60%, 0%, 45.1%)
CIE-LAB	lab(26.86, 22.55, -49.26)
CIE-LCH	lch(26.86, 54.17, 294.60°)
OKLab	oklab(37.8% -0.0065 -0.1422)
OKLCH	oklch(37.8% 0.142 267.4)
XYZ	xyz(6.7733, 5.0444, 25.4226)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21388C #8C7521

analogous

#216E8C #21388C #40218C

triadic

#21388C #8C2138 #388C21

tetradic

#21388C #8C216E #8C7521 #218C40

square

#21388C #8C216E #8C7521 #218C40

split-complementary

#21388C #8C4021 #6E8C21

monochromatic

#0A1029 #15245A #21388C #2D4CBE #516ED6

Accessibility & contrast

On white

10.45

#21388C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#21388C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21388C

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21388C	#FFFFFF	#000000	##FFFFFF
##21388C	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458F

Deuteranopia (green-blind)

#003B8A

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #21388c;
/* rgb */ color: rgb(33, 56, 140);
/* oklch */ color: oklch(37.8% 0.142 267.4);

Tailwind

colors: {
  custom: {
    50: '#6d6eae',
    500: '#21388c',
    950: '#000000',
  },
}

SCSS

$custom: #21388c;
$custom-light: #6d6eae;
$custom-dark: #000000;

JSON

{
  "hex": "#21388c",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 140
  },
  "hsl": {
    "h": 227.103,
    "s": 61.85,
    "l": 33.922
  },
  "oklch": {
    "l": 0.378,
    "c": 0.14232,
    "h": 267.4
  },
  "luminance": 0.05045
}

Semantic roles & 50–950 ramp

primary

#21388C

secondary

#B9A34F

accent

#C243E5

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #21388C

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

Preview Lab → · Contrast checker → · Palette generator →