#151F7B#151F7B

#151F7B is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.8% C 0.153 H 269.2°. Best body text is #FFFFFF at 13.87:1 contrast (WCAG AA passes).

Color values

HEX	#151F7B
RGB	rgb(21, 31, 123)
HSL	hsl(234, 71%, 28%)
HSV	hsv(234, 83%, 48%)
CMYK	cmyk(82.9%, 74.8%, 0%, 51.8%)
CIE-LAB	lab(18.23, 31.63, -52.75)
CIE-LCH	lch(18.23, 61.51, 300.95°)
OKLab	oklab(30.81% -0.0022 -0.1528)
OKLCH	oklch(30.81% 0.153 269.2)
XYZ	xyz(4.3732, 2.5690, 19.0004)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151F7B #7B7115

analogous

#15527B #151F7B #3E157B

triadic

#151F7B #7B151F #1F7B15

tetradic

#151F7B #7B1552 #7B7115 #157B3E

square

#151F7B #7B1552 #7B7115 #157B3E

split-complementary

#151F7B #7B3E15 #527B15

monochromatic

#04071A #0C1247 #151F7B #1E2CAF #2F40DB

Accessibility & contrast

On white

13.87

#151F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#151F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151F7B

13.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151F7B	#FFFFFF	#000000	##FFFFFF
##151F7B	1.00	13.87	1.51	13.87
#FFFFFF	13.87	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317E

Deuteranopia (green-blind)

#002779

Tritanopia (blue-blind)

#00394B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #151f7b;
/* rgb */ color: rgb(21, 31, 123);
/* oklch */ color: oklch(30.8% 0.153 269.2);

Tailwind

colors: {
  custom: {
    50: '#675ba2',
    500: '#151f7b',
    950: '#000000',
  },
}

SCSS

$custom: #151f7b;
$custom-light: #675ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#151f7b",
  "rgb": {
    "r": 21,
    "g": 31,
    "b": 123
  },
  "hsl": {
    "h": 234.118,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.30811,
    "c": 0.15284,
    "h": 269.2
  },
  "luminance": 0.02569
}

Semantic roles & 50–950 ramp

primary

#151F7B

secondary

#B0A53B

accent

#DC3AEE

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #151F7B

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

Preview Lab → · Contrast checker → · Palette generator →