#283A70#283A70

#283A70 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.4% C 0.096 H 267.6°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#283A70
RGB	rgb(40, 58, 112)
HSL	hsl(225, 47%, 30%)
HSV	hsv(225, 64%, 44%)
CMYK	cmyk(64.3%, 48.2%, 0%, 56.1%)
CIE-LAB	lab(25.70, 11.41, -33.51)
CIE-LCH	lch(25.70, 35.40, 288.80°)
OKLab	oklab(36.36% -0.004 -0.0957)
OKLCH	oklch(36.36% 0.096 267.6)
XYZ	xyz(5.3118, 4.6466, 15.9431)
Luminance	0.0465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A70 #705E28

analogous

#285E70 #283A70 #3A2870

triadic

#283A70 #70283A #3A7028

tetradic

#283A70 #70285E #705E28 #28703A

square

#283A70 #70285E #705E28 #28703A

split-complementary

#283A70 #703A28 #5E7028

monochromatic

#080C17 #182343 #283A70 #38519D #516DC1

Accessibility & contrast

On white

10.88

#283A70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#283A70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A70

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A70	#FFFFFF	#000000	##FFFFFF
##283A70	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204072

Deuteranopia (green-blind)

#153A6F

Tritanopia (blue-blind)

#00464F

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283a70;
/* rgb */ color: rgb(40, 58, 112);
/* oklch */ color: oklch(36.4% 0.096 267.6);

Tailwind

colors: {
  custom: {
    50: '#6a6f99',
    500: '#283a70',
    950: '#000000',
  },
}

SCSS

$custom: #283a70;
$custom-light: #6a6f99;
$custom-dark: #000000;

JSON

{
  "hex": "#283a70",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 112
  },
  "hsl": {
    "h": 225,
    "s": 47.368,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36358,
    "c": 0.09577,
    "h": 267.6
  },
  "luminance": 0.04647
}

Semantic roles & 50–950 ramp

primary

#283A70

secondary

#A28E51

accent

#B551D7

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283A70

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

Preview Lab → · Contrast checker → · Palette generator →