#283B60#283B60

#283B60 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.5% C 0.069 H 262.7°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#283B60
RGB	rgb(40, 59, 96)
HSL	hsl(220, 41%, 27%)
HSV	hsv(220, 58%, 38%)
CMYK	cmyk(58.3%, 38.5%, 0%, 62.4%)
CIE-LAB	lab(25.02, 4.72, -24.29)
CIE-LCH	lch(25.02, 24.75, 280.99°)
OKLab	oklab(35.51% -0.0088 -0.0687)
OKLCH	oklch(35.51% 0.069 262.7)
XYZ	xyz(4.5496, 4.4232, 11.6781)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B60 #604D28

analogous

#285760 #283B60 #312860

triadic

#283B60 #60283B #3B6028

tetradic

#283B60 #602857 #604D28 #286031

square

#283B60 #602857 #604D28 #286031

split-complementary

#283B60 #603128 #576028

monochromatic

#090D16 #162035 #283B60 #3A568B #4D71B5

Accessibility & contrast

On white

11.14

#283B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#283B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B60

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B60	#FFFFFF	#000000	##FFFFFF
##283B60	1.00	11.14	1.88	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3E62

Deuteranopia (green-blind)

#25395F

Tritanopia (blue-blind)

#084349

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283b60;
/* rgb */ color: rgb(40, 59, 96);
/* oklch */ color: oklch(35.5% 0.069 262.7);

Tailwind

colors: {
  custom: {
    50: '#67708d',
    500: '#283b60',
    950: '#000000',
  },
}

SCSS

$custom: #283b60;
$custom-light: #67708d;
$custom-dark: #000000;

JSON

{
  "hex": "#283b60",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 96
  },
  "hsl": {
    "h": 219.643,
    "s": 41.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.35514,
    "c": 0.06923,
    "h": 262.7
  },
  "luminance": 0.04424
}

Semantic roles & 50–950 ramp

primary

#283B60

secondary

#937C51

accent

#A857D1

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #283B60

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

Preview Lab → · Contrast checker → · Palette generator →