#283B94#283B94

#283B94 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.148 H 269.3°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#283B94
RGB	rgb(40, 59, 148)
HSL	hsl(229, 57%, 37%)
HSV	hsv(229, 73%, 58%)
CMYK	cmyk(73%, 60.1%, 0%, 42%)
CIE-LAB	lab(28.69, 24.51, -51.20)
CIE-LCH	lch(28.69, 56.76, 295.58°)
OKLab	oklab(39.46% -0.0019 -0.1477)
OKLCH	oklch(39.46% 0.148 269.3)
XYZ	xyz(7.7825, 5.7164, 28.7045)
Luminance	0.0572 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B94 #948128

analogous

#287194 #283B94 #4B2894

triadic

#283B94 #94283B #3B9428

tetradic

#283B94 #942871 #948128 #28944B

square

#283B94 #942871 #948128 #28944B

split-complementary

#283B94 #944B28 #719428

monochromatic

#0E1534 #1B2864 #283B94 #354EC4 #6276D5

Accessibility & contrast

On white

9.80

#283B94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#283B94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B94

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B94	#FFFFFF	#000000	##FFFFFF
##283B94	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004997

Deuteranopia (green-blind)

#003F92

Tritanopia (blue-blind)

#005161

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #283b94;
/* rgb */ color: rgb(40, 59, 148);
/* oklch */ color: oklch(39.5% 0.148 269.3);

Tailwind

colors: {
  custom: {
    50: '#7170b4',
    500: '#283b94',
    950: '#000000',
  },
}

SCSS

$custom: #283b94;
$custom-light: #7170b4;
$custom-dark: #000000;

JSON

{
  "hex": "#283b94",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 148
  },
  "hsl": {
    "h": 229.444,
    "s": 57.447,
    "l": 36.863
  },
  "oklch": {
    "l": 0.39464,
    "c": 0.14769,
    "h": 269.3
  },
  "luminance": 0.05717
}

Semantic roles & 50–950 ramp

primary

#283B94

secondary

#BAAA5E

accent

#C647E1

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #283B94

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

Preview Lab → · Contrast checker → · Palette generator →