#10174C#10174C

#10174C is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.9% C 0.097 H 271.1°. Best body text is #FFFFFF at 16.81:1 contrast (WCAG AA passes).

Color values

HEX	#10174C
RGB	rgb(16, 23, 76)
HSL	hsl(233, 65%, 18%)
HSV	hsv(233, 79%, 30%)
CMYK	cmyk(78.9%, 69.7%, 0%, 70.2%)
CIE-LAB	lab(10.88, 17.99, -33.70)
CIE-LCH	lch(10.88, 38.20, 298.10°)
OKLab	oklab(23.89% 0.0018 -0.0973)
OKLCH	oklch(23.89% 0.097 271.1)
XYZ	xyz(1.8241, 1.2446, 6.9802)
Luminance	0.0124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10174C #4C4510

analogous

#10354C #10174C #27104C

triadic

#10174C #4C1017 #174C10

tetradic

#10174C #4C1035 #4C4510 #104C27

square

#10174C #4C1035 #4C4510 #104C27

split-complementary

#10174C #4C2710 #354C10

monochromatic

#050819 #050819 #10174C #1B267F #2536B1

Accessibility & contrast

On white

16.81

#10174C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#10174C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10174C

16.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10174C	#FFFFFF	#000000	##FFFFFF
##10174C	1.00	16.81	1.25	16.81
#FFFFFF	16.81	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204E

Deuteranopia (green-blind)

#001A4B

Tritanopia (blue-blind)

#00252F

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #10174c;
/* rgb */ color: rgb(16, 23, 76);
/* oklch */ color: oklch(23.9% 0.097 271.1);

Tailwind

colors: {
  custom: {
    50: '#59537f',
    500: '#10174c',
    950: '#000000',
  },
}

SCSS

$custom: #10174c;
$custom-light: #59537f;
$custom-dark: #000000;

JSON

{
  "hex": "#10174c",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 76
  },
  "hsl": {
    "h": 233,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.2389,
    "c": 0.09735,
    "h": 271.1
  },
  "luminance": 0.01245
}

Semantic roles & 50–950 ramp

primary

#10174C

secondary

#867C32

accent

#D540E8

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #10174C

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

Preview Lab → · Contrast checker → · Palette generator →