#151B6E#151B6E

#151B6E is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.7% C 0.140 H 270.6°. Best body text is #FFFFFF at 14.85:1 contrast (WCAG AA passes).

Color values

HEX	#151B6E
RGB	rgb(21, 27, 110)
HSL	hsl(236, 68%, 26%)
HSV	hsv(236, 81%, 43%)
CMYK	cmyk(80.9%, 75.5%, 0%, 56.9%)
CIE-LAB	lab(15.84, 29.32, -48.31)
CIE-LCH	lch(15.84, 56.51, 301.26°)
OKLab	oklab(28.67% 0.0014 -0.1399)
OKLCH	oklch(28.67% 0.14 270.6)
XYZ	xyz(3.5147, 2.0687, 14.9629)
Luminance	0.0207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B6E #6E6815

analogous

#15476E #151B6E #3B156E

triadic

#151B6E #6E151B #1B6E15

tetradic

#151B6E #6E1547 #6E6815 #156E3B

square

#151B6E #6E1547 #6E6815 #156E3B

split-complementary

#151B6E #6E3B15 #476E15

monochromatic

#05061A #0B0E3B #151B6E #1F28A1 #2934D5

Accessibility & contrast

On white

14.85

#151B6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#151B6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B6E

14.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B6E	#FFFFFF	#000000	##FFFFFF
##151B6E	1.00	14.85	1.41	14.85
#FFFFFF	14.85	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C70

Deuteranopia (green-blind)

#00236D

Tritanopia (blue-blind)

#003342

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #151b6e;
/* rgb */ color: rgb(21, 27, 110);
/* oklch */ color: oklch(28.7% 0.140 270.6);

Tailwind

colors: {
  custom: {
    50: '#645899',
    500: '#151b6e',
    950: '#000000',
  },
}

SCSS

$custom: #151b6e;
$custom-light: #645899;
$custom-dark: #000000;

JSON

{
  "hex": "#151b6e",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 110
  },
  "hsl": {
    "h": 235.955,
    "s": 67.939,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28669,
    "c": 0.13988,
    "h": 270.6
  },
  "luminance": 0.02069
}

Semantic roles & 50–950 ramp

primary

#151B6E

secondary

#A49D3A

accent

#DF3DEB

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #151B6E

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

Preview Lab → · Contrast checker → · Palette generator →