#0F123B#0F123B

#0F123B is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.0% C 0.078 H 274.3°. Best body text is #FFFFFF at 17.95:1 contrast (WCAG AA passes).

Color values

HEX	#0F123B
RGB	rgb(15, 18, 59)
HSL	hsl(236, 59%, 15%)
HSV	hsv(236, 75%, 23%)
CMYK	cmyk(74.6%, 69.5%, 0%, 76.9%)
CIE-LAB	lab(7.68, 14.45, -26.96)
CIE-LCH	lch(7.68, 30.59, 298.20°)
OKLab	oklab(20.99% 0.0059 -0.0776)
OKLCH	oklch(20.99% 0.078 274.3)
XYZ	xyz(1.2025, 0.8498, 4.2375)
Luminance	0.0085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 3.66

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F123B #3B380F

analogous

#0F283B #0F123B #220F3B

triadic

#0F123B #3B0F12 #123B0F

tetradic

#0F123B #3B0F28 #3B380F #0F3B22

square

#0F123B #3B0F28 #3B380F #0F3B22

split-complementary

#0F123B #3B220F #283B0F

monochromatic

#060718 #060718 #0F123B #1B216C #28309D

Accessibility & contrast

On white

17.95

#0F123B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#0F123B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F123B

17.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F123B	#FFFFFF	#000000	##FFFFFF
##0F123B	1.00	17.95	1.17	17.95
#FFFFFF	17.95	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193C

Deuteranopia (green-blind)

#00153A

Tritanopia (blue-blind)

#001C24

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #0f123b;
/* rgb */ color: rgb(15, 18, 59);
/* oklch */ color: oklch(21.0% 0.078 274.3);

Tailwind

colors: {
  custom: {
    50: '#544f71',
    500: '#0f123b',
    950: '#000000',
  },
}

SCSS

$custom: #0f123b;
$custom-light: #544f71;
$custom-dark: #000000;

JSON

{
  "hex": "#0f123b",
  "rgb": {
    "r": 15,
    "g": 18,
    "b": 59
  },
  "hsl": {
    "h": 235.909,
    "s": 59.459,
    "l": 14.51
  },
  "oklch": {
    "l": 0.20985,
    "c": 0.07787,
    "h": 274.3
  },
  "luminance": 0.0085
}

Semantic roles & 50–950 ramp

primary

#0F123B

secondary

#757130

accent

#D845E3

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #0F123B

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

Preview Lab → · Contrast checker → · Palette generator →