#1A283F#1A283F

#1A283F is a dark, muted blue. Relative luminance 0.021; OKLCH L 27.6% C 0.047 H 260.0°. Best body text is #FFFFFF at 14.80:1 contrast (WCAG AA passes).

Color values

HEX	#1A283F
RGB	rgb(26, 40, 63)
HSL	hsl(217, 42%, 17%)
HSV	hsv(217, 59%, 25%)
CMYK	cmyk(58.7%, 36.5%, 0%, 75.3%)
CIE-LAB	lab(15.98, 2.04, -16.46)
CIE-LCH	lch(15.98, 16.59, 277.05°)
OKLab	oklab(27.63% -0.0082 -0.0463)
OKLCH	oklch(27.63% 0.047 260)
XYZ	xyz(2.0817, 2.0959, 4.9965)
Luminance	0.0210 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A283F #3F311A

analogous

#1A3B3F #1A283F #1E1A3F

triadic

#1A283F #3F1A28 #283F1A

tetradic

#1A283F #3F1A3B #3F311A #1A3F1E

square

#1A283F #3F1A3B #3F311A #1A3F1E

split-complementary

#1A283F #3F1E1A #3B3F1A

monochromatic

#090E16 #090E16 #1A283F #2C446A #3E5F96

Accessibility & contrast

On white

14.80

#1A283F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1A283F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A283F

14.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A283F	#FFFFFF	#000000	##FFFFFF
##1A283F	1.00	14.80	1.42	14.80
#FFFFFF	14.80	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F2A40

Deuteranopia (green-blind)

#1B263F

Tritanopia (blue-blind)

#082D30

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1a283f;
/* rgb */ color: rgb(26, 40, 63);
/* oklch */ color: oklch(27.6% 0.047 260.0);

Tailwind

colors: {
  custom: {
    50: '#596174',
    500: '#1a283f',
    950: '#000000',
  },
}

SCSS

$custom: #1a283f;
$custom-light: #596174;
$custom-dark: #000000;

JSON

{
  "hex": "#1a283f",
  "rgb": {
    "r": 26,
    "g": 40,
    "b": 63
  },
  "hsl": {
    "h": 217.297,
    "s": 41.573,
    "l": 17.451
  },
  "oklch": {
    "l": 0.27626,
    "c": 0.04703,
    "h": 260
  },
  "luminance": 0.02096
}

Semantic roles & 50–950 ramp

primary

#1A283F

secondary

#756140

accent

#A356D1

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040508

muted

#79797B

Preview Lab

Preview with #1A283F

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

Preview Lab → · Contrast checker → · Palette generator →