#21457F#21457F

#21457F is a dark, moderate blue. Relative luminance 0.061; OKLCH L 39.6% C 0.106 H 259.5°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#21457F
RGB	rgb(33, 69, 127)
HSL	hsl(217, 59%, 31%)
HSV	hsv(217, 74%, 50%)
CMYK	cmyk(74%, 45.7%, 0%, 50.2%)
CIE-LAB	lab(29.69, 8.41, -36.60)
CIE-LCH	lch(29.69, 37.56, 282.94°)
OKLab	oklab(39.65% -0.0193 -0.1047)
OKLCH	oklch(39.65% 0.107 259.5)
XYZ	xyz(6.5847, 6.1112, 20.9071)
Luminance	0.0611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21457F #7F5B21

analogous

#21747F #21457F #2C217F

triadic

#21457F #7F2145 #457F21

tetradic

#21457F #7F2174 #7F5B21 #217F2C

square

#21457F #7F2174 #7F5B21 #217F2C

split-complementary

#21457F #7F2C21 #747F21

monochromatic

#08101E #142B4E #21457F #2E5FB0 #4A7ED0

Accessibility & contrast

On white

9.45

#21457F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#21457F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21457F

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21457F	#FFFFFF	#000000	##FFFFFF
##21457F	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284B81

Deuteranopia (green-blind)

#17427E

Tritanopia (blue-blind)

#00535B

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #21457f;
/* rgb */ color: rgb(33, 69, 127);
/* oklch */ color: oklch(39.6% 0.106 259.5);

Tailwind

colors: {
  custom: {
    50: '#6978a4',
    500: '#21457f',
    950: '#000000',
  },
}

SCSS

$custom: #21457f;
$custom-light: #6978a4;
$custom-dark: #000000;

JSON

{
  "hex": "#21457f",
  "rgb": {
    "r": 33,
    "g": 69,
    "b": 127
  },
  "hsl": {
    "h": 217.021,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.39646,
    "c": 0.1065,
    "h": 259.5
  },
  "luminance": 0.06112
}

Semantic roles & 50–950 ramp

primary

#21457F

secondary

#B28A4A

accent

#A646E2

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #21457F

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

Preview Lab → · Contrast checker → · Palette generator →