#283F60#283F60

#283F60 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.5% C 0.064 H 257.4°. Best body text is #FFFFFF at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#283F60
RGB	rgb(40, 63, 96)
HSL	hsl(215, 41%, 27%)
HSV	hsv(215, 58%, 38%)
CMYK	cmyk(58.3%, 34.4%, 0%, 62.4%)
CIE-LAB	lab(26.30, 2.00, -22.28)
CIE-LCH	lch(26.30, 22.37, 275.12°)
OKLab	oklab(36.51% -0.014 -0.0628)
OKLCH	oklch(36.51% 0.064 257.4)
XYZ	xyz(4.7632, 4.8503, 11.7493)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F60 #604928

analogous

#285B60 #283F60 #2D2860

triadic

#283F60 #60283F #3F6028

tetradic

#283F60 #60285B #604928 #28602D

square

#283F60 #60285B #604928 #28602D

split-complementary

#283F60 #602D28 #5B6028

monochromatic

#090E16 #162335 #283F60 #3A5B8B #4D78B5

Accessibility & contrast

On white

10.66

#283F60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#283F60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F60

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F60	#FFFFFF	#000000	##FFFFFF
##283F60	1.00	10.66	1.97	10.66
#FFFFFF	10.66	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324161

Deuteranopia (green-blind)

#2B3C5F

Tritanopia (blue-blind)

#06464B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283f60;
/* rgb */ color: rgb(40, 63, 96);
/* oklch */ color: oklch(36.5% 0.064 257.4);

Tailwind

colors: {
  custom: {
    50: '#67738d',
    500: '#283f60',
    950: '#000000',
  },
}

SCSS

$custom: #283f60;
$custom-light: #67738d;
$custom-dark: #000000;

JSON

{
  "hex": "#283f60",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 96
  },
  "hsl": {
    "h": 215.357,
    "s": 41.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.3651,
    "c": 0.06431,
    "h": 257.4
  },
  "luminance": 0.04851
}

Semantic roles & 50–950 ramp

primary

#283F60

secondary

#937851

accent

#9F57D1

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#06080C

muted

#7A7B7D

Preview Lab

Preview with #283F60

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

Preview Lab → · Contrast checker → · Palette generator →