#151C55#151C55

#151C55 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.2% C 0.103 H 271.8°. Best body text is #FFFFFF at 15.80:1 contrast (WCAG AA passes).

Color values

HEX	#151C55
RGB	rgb(21, 28, 85)
HSL	hsl(233, 60%, 21%)
HSV	hsv(233, 75%, 33%)
CMYK	cmyk(75.3%, 67.1%, 0%, 66.7%)
CIE-LAB	lab(13.51, 18.77, -35.55)
CIE-LCH	lch(13.51, 40.20, 297.83°)
OKLab	oklab(26.18% 0.0033 -0.1026)
OKLCH	oklch(26.18% 0.103 271.8)
XYZ	xyz(2.3637, 1.6456, 8.7856)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C55 #554E15

analogous

#153C55 #151C55 #2E1555

triadic

#151C55 #55151C #1C5515

tetradic

#151C55 #55153C #554E15 #15552E

square

#151C55 #55153C #554E15 #15552E

split-complementary

#151C55 #552E15 #3C5515

monochromatic

#060819 #090C24 #151C55 #212C86 #2D3CB7

Accessibility & contrast

On white

15.80

#151C55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#151C55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C55

15.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C55	#FFFFFF	#000000	##FFFFFF
##151C55	1.00	15.80	1.33	15.80
#FFFFFF	15.80	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002657

Deuteranopia (green-blind)

#002054

Tritanopia (blue-blind)

#002A35

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #151c55;
/* rgb */ color: rgb(21, 28, 85);
/* oklch */ color: oklch(26.2% 0.103 271.8);

Tailwind

colors: {
  custom: {
    50: '#5d5885',
    500: '#151c55',
    950: '#000000',
  },
}

SCSS

$custom: #151c55;
$custom-light: #5d5885;
$custom-dark: #000000;

JSON

{
  "hex": "#151c55",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 85
  },
  "hsl": {
    "h": 233.438,
    "s": 60.377,
    "l": 20.784
  },
  "oklch": {
    "l": 0.2618,
    "c": 0.10264,
    "h": 271.8
  },
  "luminance": 0.01646
}

Semantic roles & 50–950 ramp

primary

#151C55

secondary

#8D8439

accent

#D244E4

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #151C55

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

Preview Lab → · Contrast checker → · Palette generator →