#0B0F40#0B0F40

#0B0F40 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.6% C 0.091 H 271.7°. Best body text is #FFFFFF at 18.16:1 contrast (WCAG AA passes).

Color values

HEX	#0B0F40
RGB	rgb(11, 15, 64)
HSL	hsl(235, 71%, 15%)
HSV	hsv(235, 83%, 25%)
CMYK	cmyk(82.8%, 76.6%, 0%, 74.9%)
CIE-LAB	lab(7.07, 18.07, -31.53)
CIE-LCH	lch(7.07, 36.34, 299.81°)
OKLab	oklab(20.6% 0.0028 -0.0914)
OKLCH	oklch(20.6% 0.091 271.7)
XYZ	xyz(1.2339, 0.7828, 4.9356)
Luminance	0.0078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 2.09

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0F40 #403C0B

analogous

#0B2A40 #0B0F40 #220B40

triadic

#0B0F40 #400B0F #0F400B

tetradic

#0B0F40 #400B2A #403C0B #0B4022

square

#0B0F40 #400B2A #403C0B #0B4022

split-complementary

#0B0F40 #40220B #2A400B

monochromatic

#04061A #04061A #0B0F40 #141B74 #1D27A8

Accessibility & contrast

On white

18.16

#0B0F40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#0B0F40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0F40

18.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0F40	#FFFFFF	#000000	##FFFFFF
##0B0F40	1.00	18.16	1.16	18.16
#FFFFFF	18.16	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001842

Deuteranopia (green-blind)

#00133F

Tritanopia (blue-blind)

#001C25

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #0b0f40;
/* rgb */ color: rgb(11, 15, 64);
/* oklch */ color: oklch(20.6% 0.091 271.7);

Tailwind

colors: {
  custom: {
    50: '#544d75',
    500: '#0b0f40',
    950: '#000000',
  },
}

SCSS

$custom: #0b0f40;
$custom-light: #544d75;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0f40",
  "rgb": {
    "r": 11,
    "g": 15,
    "b": 64
  },
  "hsl": {
    "h": 235.472,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.206,
    "c": 0.09142,
    "h": 271.7
  },
  "luminance": 0.00783
}

Semantic roles & 50–950 ramp

primary

#0B0F40

secondary

#7D762A

accent

#E03AED

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #0B0F40

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

Preview Lab → · Contrast checker → · Palette generator →