#1C283F#1C283F

#1C283F is a dark, muted blue. Relative luminance 0.021; OKLCH L 27.8% C 0.046 H 262.7°. Best body text is #FFFFFF at 14.74:1 contrast (WCAG AA passes).

Color values

HEX	#1C283F
RGB	rgb(28, 40, 63)
HSL	hsl(219, 38%, 18%)
HSV	hsv(219, 56%, 25%)
CMYK	cmyk(55.6%, 36.5%, 0%, 75.3%)
CIE-LAB	lab(16.12, 2.62, -16.23)
CIE-LCH	lch(16.12, 16.44, 279.15°)
OKLab	oklab(27.77% -0.0058 -0.0456)
OKLCH	oklch(27.77% 0.046 262.7)
XYZ	xyz(2.1346, 2.1232, 4.9990)
Luminance	0.0212 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C283F #3F331C

analogous

#1C393F #1C283F #211C3F

triadic

#1C283F #3F1C28 #283F1C

tetradic

#1C283F #3F1C39 #3F331C #1C3F21

square

#1C283F #3F1C39 #3F331C #1C3F21

split-complementary

#1C283F #3F211C #393F1C

monochromatic

#090D15 #090D15 #1C283F #2F4369 #425E94

Accessibility & contrast

On white

14.74

#1C283F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1C283F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C283F

14.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C283F	#FFFFFF	#000000	##FFFFFF
##1C283F	1.00	14.74	1.42	14.74
#FFFFFF	14.74	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F2A40

Deuteranopia (green-blind)

#1B273E

Tritanopia (blue-blind)

#0D2D30

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1c283f;
/* rgb */ color: rgb(28, 40, 63);
/* oklch */ color: oklch(27.8% 0.046 262.7);

Tailwind

colors: {
  custom: {
    50: '#5b6174',
    500: '#1c283f',
    950: '#000000',
  },
}

SCSS

$custom: #1c283f;
$custom-light: #5b6174;
$custom-dark: #000000;

JSON

{
  "hex": "#1c283f",
  "rgb": {
    "r": 28,
    "g": 40,
    "b": 63
  },
  "hsl": {
    "h": 219.429,
    "s": 38.462,
    "l": 17.843
  },
  "oklch": {
    "l": 0.2777,
    "c": 0.04598,
    "h": 262.7
  },
  "luminance": 0.02123
}

Semantic roles & 50–950 ramp

primary

#1C283F

secondary

#746343

accent

#A659CE

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040508

muted

#79797B

Preview Lab

Preview with #1C283F

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

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