#283DAA#283DAA

#283DAA is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.175 H 268.8°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#283DAA
RGB	rgb(40, 61, 170)
HSL	hsl(230, 62%, 41%)
HSV	hsv(230, 76%, 67%)
CMYK	cmyk(76.5%, 64.1%, 0%, 33.3%)
CIE-LAB	lab(31.09, 31.46, -60.60)
CIE-LCH	lch(31.09, 68.28, 297.44°)
OKLab	oklab(41.83% -0.0036 -0.1752)
OKLCH	oklch(41.83% 0.175 268.8)
XYZ	xyz(9.7970, 6.6898, 38.7973)
Luminance	0.0669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283DAA #AA9528

analogous

#287EAA #283DAA #5428AA

triadic

#283DAA #AA283D #3DAA28

tetradic

#283DAA #AA287E #AA9528 #28AA54

square

#283DAA #AA287E #AA9528 #28AA54

split-complementary

#283DAA #AA5428 #7EAA28

monochromatic

#111947 #1C2B78 #283DAA #3E56D2 #6F81DD

Accessibility & contrast

On white

8.98

#283DAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#283DAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283DAA

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283DAA	#FFFFFF	#000000	##FFFFFF
##283DAA	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAD

Deuteranopia (green-blind)

#0043A8

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #283daa;
/* rgb */ color: rgb(40, 61, 170);
/* oklch */ color: oklch(41.8% 0.175 268.8);

Tailwind

colors: {
  custom: {
    50: '#7772c4',
    500: '#283daa',
    950: '#000000',
  },
}

SCSS

$custom: #283daa;
$custom-light: #7772c4;
$custom-dark: #000000;

JSON

{
  "hex": "#283daa",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 170
  },
  "hsl": {
    "h": 230.308,
    "s": 61.905,
    "l": 41.176
  },
  "oklch": {
    "l": 0.41829,
    "c": 0.17528,
    "h": 268.8
  },
  "luminance": 0.06691
}

Semantic roles & 50–950 ramp

primary

#283DAA

secondary

#C4B56A

accent

#CB43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #283DAA

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

Preview Lab → · Contrast checker → · Palette generator →