#1D283F#1D283F

#1D283F is a dark, muted blue. Relative luminance 0.021; OKLCH L 27.8% C 0.045 H 264.1°. Best body text is #FFFFFF at 14.71:1 contrast (WCAG AA passes).

Color values

HEX	#1D283F
RGB	rgb(29, 40, 63)
HSL	hsl(221, 37%, 18%)
HSV	hsv(221, 54%, 25%)
CMYK	cmyk(54%, 36.5%, 0%, 75.3%)
CIE-LAB	lab(16.19, 2.92, -16.12)
CIE-LCH	lch(16.19, 16.38, 280.25°)
OKLab	oklab(27.85% -0.0046 -0.0452)
OKLCH	oklch(27.85% 0.045 264.1)
XYZ	xyz(2.1624, 2.1375, 5.0003)
Luminance	0.0214 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D283F #3F341D

analogous

#1D393F #1D283F #231D3F

triadic

#1D283F #3F1D28 #283F1D

tetradic

#1D283F #3F1D39 #3F341D #1D3F23

square

#1D283F #3F1D39 #3F341D #1D3F23

split-complementary

#1D283F #3F231D #393F1D

monochromatic

#0A0D15 #0A0D15 #1D283F #304369 #445D93

Accessibility & contrast

On white

14.71

#1D283F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1D283F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D283F

14.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D283F	#FFFFFF	#000000	##FFFFFF
##1D283F	1.00	14.71	1.43	14.71
#FFFFFF	14.71	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F2A40

Deuteranopia (green-blind)

#1C273E

Tritanopia (blue-blind)

#0F2D30

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1d283f;
/* rgb */ color: rgb(29, 40, 63);
/* oklch */ color: oklch(27.8% 0.045 264.1);

Tailwind

colors: {
  custom: {
    50: '#5b6174',
    500: '#1d283f',
    950: '#000000',
  },
}

SCSS

$custom: #1d283f;
$custom-light: #5b6174;
$custom-dark: #000000;

JSON

{
  "hex": "#1d283f",
  "rgb": {
    "r": 29,
    "g": 40,
    "b": 63
  },
  "hsl": {
    "h": 220.588,
    "s": 36.957,
    "l": 18.039
  },
  "oklch": {
    "l": 0.27845,
    "c": 0.04549,
    "h": 264.1
  },
  "luminance": 0.02138
}

Semantic roles & 50–950 ramp

primary

#1D283F

secondary

#746444

accent

#A85BCD

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040508

muted

#79797B

Preview Lab

Preview with #1D283F

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

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