#283EAA#283EAA

#283EAA is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.174 H 268.6°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#283EAA
RGB	rgb(40, 62, 170)
HSL	hsl(230, 62%, 41%)
HSV	hsv(230, 76%, 67%)
CMYK	cmyk(76.5%, 63.5%, 0%, 33.3%)
CIE-LAB	lab(31.34, 30.80, -60.19)
CIE-LCH	lch(31.34, 67.61, 297.10°)
OKLab	oklab(42.02% -0.0043 -0.174)
OKLCH	oklch(42.02% 0.174 268.6)
XYZ	xyz(9.8509, 6.7976, 38.8153)
Luminance	0.0680 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283EAA #AA9428

analogous

#287FAA #283EAA #5328AA

triadic

#283EAA #AA283E #3EAA28

tetradic

#283EAA #AA287F #AA9428 #28AA53

square

#283EAA #AA287F #AA9428 #28AA53

split-complementary

#283EAA #AA5328 #7FAA28

monochromatic

#111A47 #1C2C78 #283EAA #3E57D2 #6F82DD

Accessibility & contrast

On white

8.90

#283EAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#283EAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283EAA

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283EAA	#FFFFFF	#000000	##FFFFFF
##283EAA	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AD

Deuteranopia (green-blind)

#0044A8

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #283eaa;
/* rgb */ color: rgb(40, 62, 170);
/* oklch */ color: oklch(42.0% 0.174 268.6);

Tailwind

colors: {
  custom: {
    50: '#7773c4',
    500: '#283eaa',
    950: '#000000',
  },
}

SCSS

$custom: #283eaa;
$custom-light: #7773c4;
$custom-dark: #000000;

JSON

{
  "hex": "#283eaa",
  "rgb": {
    "r": 40,
    "g": 62,
    "b": 170
  },
  "hsl": {
    "h": 229.846,
    "s": 61.905,
    "l": 41.176
  },
  "oklch": {
    "l": 0.42015,
    "c": 0.17407,
    "h": 268.6
  },
  "luminance": 0.06799
}

Semantic roles & 50–950 ramp

primary

#283EAA

secondary

#C4B56A

accent

#CA43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #283EAA

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

Preview Lab → · Contrast checker → · Palette generator →