#283F67#283F67

#283F67 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 36.9% C 0.075 H 260.8°. Best body text is #FFFFFF at 10.52:1 contrast (WCAG AA passes).

Color values

HEX	#283F67
RGB	rgb(40, 63, 103)
HSL	hsl(218, 44%, 28%)
HSV	hsv(218, 61%, 40%)
CMYK	cmyk(61.2%, 38.8%, 0%, 59.6%)
CIE-LAB	lab(26.69, 4.57, -26.18)
CIE-LCH	lch(26.69, 26.57, 279.90°)
OKLab	oklab(36.94% -0.0119 -0.0741)
OKLCH	oklch(36.94% 0.075 260.8)
XYZ	xyz(5.0999, 4.9850, 13.5228)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F67 #675028

analogous

#285E67 #283F67 #302867

triadic

#283F67 #67283F #3F6728

tetradic

#283F67 #67285E #675028 #286730

square

#283F67 #67285E #675028 #286730

split-complementary

#283F67 #673028 #5E6728

monochromatic

#090D16 #17243B #283F67 #395A93 #4F76BB

Accessibility & contrast

On white

10.52

#283F67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#283F67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F67

10.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F67	#FFFFFF	#000000	##FFFFFF
##283F67	1.00	10.52	2.00	10.52
#FFFFFF	10.52	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4269

Deuteranopia (green-blind)

#263C66

Tritanopia (blue-blind)

#00484E

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #283f67;
/* rgb */ color: rgb(40, 63, 103);
/* oklch */ color: oklch(36.9% 0.075 260.8);

Tailwind

colors: {
  custom: {
    50: '#687392',
    500: '#283f67',
    950: '#000000',
  },
}

SCSS

$custom: #283f67;
$custom-light: #687392;
$custom-dark: #000000;

JSON

{
  "hex": "#283f67",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 103
  },
  "hsl": {
    "h": 218.095,
    "s": 44.056,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36939,
    "c": 0.07509,
    "h": 260.8
  },
  "luminance": 0.04985
}

Semantic roles & 50–950 ramp

primary

#283F67

secondary

#9A7F51

accent

#A554D4

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #283F67

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

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