#21389B#21389B

#21389B is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.2% C 0.163 H 267.7°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#21389B
RGB	rgb(33, 56, 155)
HSL	hsl(229, 65%, 37%)
HSV	hsv(229, 79%, 61%)
CMYK	cmyk(78.7%, 63.9%, 0%, 39.2%)
CIE-LAB	lab(28.16, 28.37, -56.35)
CIE-LCH	lch(28.16, 63.09, 296.73°)
OKLab	oklab(39.17% -0.0065 -0.163)
OKLCH	oklch(39.17% 0.163 267.7)
XYZ	xyz(7.9557, 5.5173, 31.6497)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21389B #9B8421

analogous

#21759B #21389B #47219B

triadic

#21389B #9B2138 #389B21

tetradic

#21389B #9B2175 #9B8421 #219B47

square

#21389B #9B2175 #9B8421 #219B47

split-complementary

#21389B #9B4721 #759B21

monochromatic

#0C1436 #162669 #21389B #2C4ACD #5A73DC

Accessibility & contrast

On white

9.98

#21389B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#21389B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21389B

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21389B	#FFFFFF	#000000	##FFFFFF
##21389B	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489E

Deuteranopia (green-blind)

#003D99

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #21389b;
/* rgb */ color: rgb(33, 56, 155);
/* oklch */ color: oklch(39.2% 0.163 267.7);

Tailwind

colors: {
  custom: {
    50: '#716eb9',
    500: '#21389b',
    950: '#000000',
  },
}

SCSS

$custom: #21389b;
$custom-light: #716eb9;
$custom-dark: #000000;

JSON

{
  "hex": "#21389b",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 155
  },
  "hsl": {
    "h": 228.689,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.39169,
    "c": 0.1631,
    "h": 267.7
  },
  "luminance": 0.05518
}

Semantic roles & 50–950 ramp

primary

#21389B

secondary

#C0AC58

accent

#C840E8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #21389B

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

Preview Lab → · Contrast checker → · Palette generator →