#151F7C#151F7C

#151F7C is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.9% C 0.154 H 269.1°. Best body text is #FFFFFF at 13.82:1 contrast (WCAG AA passes).

Color values

HEX	#151F7C
RGB	rgb(21, 31, 124)
HSL	hsl(234, 71%, 28%)
HSV	hsv(234, 83%, 49%)
CMYK	cmyk(83.1%, 75%, 0%, 51.4%)
CIE-LAB	lab(18.34, 32.01, -53.20)
CIE-LCH	lch(18.34, 62.09, 301.03°)
OKLab	oklab(30.92% -0.0023 -0.1541)
OKLCH	oklch(30.92% 0.154 269.1)
XYZ	xyz(4.4361, 2.5941, 19.3318)
Luminance	0.0260 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151F7C #7C7215

analogous

#15527C #151F7C #3E157C

triadic

#151F7C #7C151F #1F7C15

tetradic

#151F7C #7C1552 #7C7215 #157C3E

square

#151F7C #7C1552 #7C7215 #157C3E

split-complementary

#151F7C #7C3E15 #527C15

monochromatic

#04071A #0C1248 #151F7C #1E2CB0 #3040DC

Accessibility & contrast

On white

13.82

#151F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#151F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151F7C

13.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151F7C	#FFFFFF	#000000	##FFFFFF
##151F7C	1.00	13.82	1.52	13.82
#FFFFFF	13.82	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327F

Deuteranopia (green-blind)

#00287A

Tritanopia (blue-blind)

#003A4B

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #151f7c;
/* rgb */ color: rgb(21, 31, 124);
/* oklch */ color: oklch(30.9% 0.154 269.1);

Tailwind

colors: {
  custom: {
    50: '#675ba3',
    500: '#151f7c',
    950: '#000000',
  },
}

SCSS

$custom: #151f7c;
$custom-light: #675ba3;
$custom-dark: #000000;

JSON

{
  "hex": "#151f7c",
  "rgb": {
    "r": 21,
    "g": 31,
    "b": 124
  },
  "hsl": {
    "h": 234.175,
    "s": 71.034,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30924,
    "c": 0.15416,
    "h": 269.1
  },
  "luminance": 0.02595
}

Semantic roles & 50–950 ramp

primary

#151F7C

secondary

#B1A63C

accent

#DC3AEE

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #151F7C

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

Preview Lab → · Contrast checker → · Palette generator →