#10154F#10154F

#10154F is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.8% C 0.105 H 271.7°. Best body text is #FFFFFF at 16.91:1 contrast (WCAG AA passes).

Color values

HEX	#10154F
RGB	rgb(16, 21, 79)
HSL	hsl(235, 66%, 19%)
HSV	hsv(235, 80%, 31%)
CMYK	cmyk(79.7%, 73.4%, 0%, 69%)
CIE-LAB	lab(10.64, 20.71, -36.17)
CIE-LCH	lch(10.64, 41.68, 299.80°)
OKLab	oklab(23.81% 0.0031 -0.1046)
OKLCH	oklch(23.81% 0.105 271.7)
XYZ	xyz(1.8927, 1.2108, 7.5296)
Luminance	0.0121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.42

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10154F #4F4A10

analogous

#10344F #10154F #2A104F

triadic

#10154F #4F1015 #154F10

tetradic

#10154F #4F1034 #4F4A10 #104F2A

square

#10154F #4F1034 #4F4A10 #104F2A

split-complementary

#10154F #4F2A10 #344F10

monochromatic

#050719 #06071C #10154F #1A2382 #2530B5

Accessibility & contrast

On white

16.91

#10154F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#10154F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10154F

16.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10154F	#FFFFFF	#000000	##FFFFFF
##10154F	1.00	16.91	1.24	16.91
#FFFFFF	16.91	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002051

Deuteranopia (green-blind)

#001A4E

Tritanopia (blue-blind)

#00252F

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #10154f;
/* rgb */ color: rgb(16, 21, 79);
/* oklch */ color: oklch(23.8% 0.105 271.7);

Tailwind

colors: {
  custom: {
    50: '#5a5281',
    500: '#10154f',
    950: '#000000',
  },
}

SCSS

$custom: #10154f;
$custom-light: #5a5281;
$custom-dark: #000000;

JSON

{
  "hex": "#10154f",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 79
  },
  "hsl": {
    "h": 235.238,
    "s": 66.316,
    "l": 18.627
  },
  "oklch": {
    "l": 0.23806,
    "c": 0.10462,
    "h": 271.7
  },
  "luminance": 0.01211
}

Semantic roles & 50–950 ramp

primary

#10154F

secondary

#898232

accent

#DC3FE9

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #10154F

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

Preview Lab → · Contrast checker → · Palette generator →