#151B6B#151B6B

#151B6B is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.3% C 0.136 H 270.8°. Best body text is #FFFFFF at 14.99:1 contrast (WCAG AA passes).

Color values

HEX	#151B6B
RGB	rgb(21, 27, 107)
HSL	hsl(236, 67%, 25%)
HSV	hsv(236, 80%, 42%)
CMYK	cmyk(80.4%, 74.8%, 0%, 58%)
CIE-LAB	lab(15.51, 28.18, -46.90)
CIE-LCH	lch(15.51, 54.71, 301.00°)
OKLab	oklab(28.33% 0.0019 -0.1358)
OKLCH	oklch(28.33% 0.136 270.8)
XYZ	xyz(3.3541, 2.0045, 14.1172)
Luminance	0.0200 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B6B #6B6515

analogous

#15466B #151B6B #3A156B

triadic

#151B6B #6B151B #1B6B15

tetradic

#151B6B #6B1546 #6B6515 #156B3A

square

#151B6B #6B1546 #6B6515 #156B3A

split-complementary

#151B6B #6B3A15 #466B15

monochromatic

#05061A #0B0E38 #151B6B #1F289E #2935D1

Accessibility & contrast

On white

14.99

#151B6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#151B6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B6B

14.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B6B	#FFFFFF	#000000	##FFFFFF
##151B6B	1.00	14.99	1.40	14.99
#FFFFFF	14.99	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B6D

Deuteranopia (green-blind)

#00236A

Tritanopia (blue-blind)

#003241

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #151b6b;
/* rgb */ color: rgb(21, 27, 107);
/* oklch */ color: oklch(28.3% 0.136 270.8);

Tailwind

colors: {
  custom: {
    50: '#635896',
    500: '#151b6b',
    950: '#000000',
  },
}

SCSS

$custom: #151b6b;
$custom-light: #635896;
$custom-dark: #000000;

JSON

{
  "hex": "#151b6b",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 107
  },
  "hsl": {
    "h": 235.814,
    "s": 67.188,
    "l": 25.098
  },
  "oklch": {
    "l": 0.28331,
    "c": 0.13578,
    "h": 270.8
  },
  "luminance": 0.02005
}

Semantic roles & 50–950 ramp

primary

#151B6B

secondary

#A29A3A

accent

#DE3EEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #151B6B

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

Preview Lab → · Contrast checker → · Palette generator →