#21306E#21306E

#21306E is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.5% C 0.109 H 269.4°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#21306E
RGB	rgb(33, 48, 110)
HSL	hsl(228, 54%, 28%)
HSV	hsv(228, 70%, 43%)
CMYK	cmyk(70%, 56.4%, 0%, 56.9%)
CIE-LAB	lab(22.17, 16.33, -37.94)
CIE-LCH	lch(22.17, 41.30, 293.29°)
OKLab	oklab(33.52% -0.0011 -0.109)
OKLCH	oklch(33.52% 0.109 269.4)
XYZ	xyz(4.4977, 3.5626, 15.1995)
Luminance	0.0356 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21306E #6E5F21

analogous

#21566E #21306E #39216E

triadic

#21306E #6E2130 #306E21

tetradic

#21306E #6E2156 #6E5F21 #216E39

square

#21306E #6E2156 #6E5F21 #216E39

split-complementary

#21306E #6E3921 #566E21

monochromatic

#070A18 #131B3F #21306E #2F459D #435DC7

Accessibility & contrast

On white

12.26

#21306E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#21306E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21306E

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21306E	#FFFFFF	#000000	##FFFFFF
##21306E	1.00	12.26	1.71	12.26
#FFFFFF	12.26	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#053970

Deuteranopia (green-blind)

#00326D

Tritanopia (blue-blind)

#003F4A

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #21306e;
/* rgb */ color: rgb(33, 48, 110);
/* oklch */ color: oklch(33.5% 0.109 269.4);

Tailwind

colors: {
  custom: {
    50: '#666898',
    500: '#21306e',
    950: '#000000',
  },
}

SCSS

$custom: #21306e;
$custom-light: #666898;
$custom-dark: #000000;

JSON

{
  "hex": "#21306e",
  "rgb": {
    "r": 33,
    "g": 48,
    "b": 110
  },
  "hsl": {
    "h": 228.312,
    "s": 53.846,
    "l": 28.039
  },
  "oklch": {
    "l": 0.33517,
    "c": 0.10904,
    "h": 269.4
  },
  "luminance": 0.03563
}

Semantic roles & 50–950 ramp

primary

#21306E

secondary

#A29049

accent

#C14BDD

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #21306E

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

Preview Lab → · Contrast checker → · Palette generator →