#0F183F#0F183F

#0F183F is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.8% C 0.075 H 269.7°. Best body text is #FFFFFF at 17.17:1 contrast (WCAG AA passes).

Color values

HEX	#0F183F
RGB	rgb(15, 24, 63)
HSL	hsl(229, 62%, 15%)
HSV	hsv(229, 76%, 25%)
CMYK	cmyk(76.2%, 61.9%, 0%, 75.3%)
CIE-LAB	lab(9.90, 11.51, -26.19)
CIE-LCH	lch(9.90, 28.61, 293.71°)
OKLab	oklab(22.77% -0.0004 -0.0753)
OKLCH	oklch(22.77% 0.075 269.7)
XYZ	xyz(1.4205, 1.1136, 4.8417)
Luminance	0.0111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F183F #3F360F

analogous

#0F303F #0F183F #1E0F3F

triadic

#0F183F #3F0F18 #183F0F

tetradic

#0F183F #3F0F30 #3F360F #0F3F1E

square

#0F183F #3F0F30 #3F360F #0F3F1E

split-complementary

#0F183F #3F1E0F #303F0F

monochromatic

#060919 #060919 #0F183F #1B2B70 #273EA2

Accessibility & contrast

On white

17.17

#0F183F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#0F183F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F183F

17.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F183F	#FFFFFF	#000000	##FFFFFF
##0F183F	1.00	17.17	1.22	17.17
#FFFFFF	17.17	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011E40

Deuteranopia (green-blind)

#00193E

Tritanopia (blue-blind)

#002128

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #0f183f;
/* rgb */ color: rgb(15, 24, 63);
/* oklch */ color: oklch(22.8% 0.075 269.7);

Tailwind

colors: {
  custom: {
    50: '#545474',
    500: '#0f183f',
    950: '#000000',
  },
}

SCSS

$custom: #0f183f;
$custom-light: #545474;
$custom-dark: #000000;

JSON

{
  "hex": "#0f183f",
  "rgb": {
    "r": 15,
    "g": 24,
    "b": 63
  },
  "hsl": {
    "h": 228.75,
    "s": 61.538,
    "l": 15.294
  },
  "oklch": {
    "l": 0.22765,
    "c": 0.0753,
    "h": 269.7
  },
  "luminance": 0.01114
}

Semantic roles & 50–950 ramp

primary

#0F183F

secondary

#796C30

accent

#C643E5

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0F183F

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

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