#21387C#21387C

#21387C is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.4% C 0.119 H 266.4°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX	#21387C
RGB	rgb(33, 56, 124)
HSL	hsl(225, 58%, 31%)
HSV	hsv(225, 73%, 49%)
CMYK	cmyk(73.4%, 54.8%, 0%, 51.4%)
CIE-LAB	lab(25.58, 16.23, -41.34)
CIE-LCH	lch(25.58, 44.41, 291.43°)
OKLab	oklab(36.44% -0.0075 -0.1189)
OKLCH	oklch(36.44% 0.119 266.4)
XYZ	xyz(5.6782, 4.6063, 19.6547)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21387C #7C6521

analogous

#21657C #21387C #37217C

triadic

#21387C #7C2138 #387C21

tetradic

#21387C #7C2165 #7C6521 #217C37

square

#21387C #7C2165 #7C6521 #217C37

split-complementary

#21387C #7C3721 #657C21

monochromatic

#070C1B #14224C #21387C #2E4EAC #496BCF

Accessibility & contrast

On white

10.93

#21387C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#21387C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21387C

10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21387C	#FFFFFF	#000000	##FFFFFF
##21387C	1.00	10.93	1.92	10.93
#FFFFFF	10.93	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09417E

Deuteranopia (green-blind)

#00397B

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #21387c;
/* rgb */ color: rgb(33, 56, 124);
/* oklch */ color: oklch(36.4% 0.119 266.4);

Tailwind

colors: {
  custom: {
    50: '#696ea2',
    500: '#21387c',
    950: '#000000',
  },
}

SCSS

$custom: #21387c;
$custom-light: #696ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#21387c",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 124
  },
  "hsl": {
    "h": 224.835,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36436,
    "c": 0.11912,
    "h": 266.4
  },
  "luminance": 0.04607
}

Semantic roles & 50–950 ramp

primary

#21387C

secondary

#AF954A

accent

#BA47E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #21387C

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

Preview Lab → · Contrast checker → · Palette generator →