#17104E#17104E

#17104E is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.3% C 0.108 H 279.1°. Best body text is #FFFFFF at 17.20:1 contrast (WCAG AA passes).

Color values

HEX	#17104E
RGB	rgb(23, 16, 78)
HSL	hsl(247, 66%, 18%)
HSV	hsv(247, 79%, 31%)
CMYK	cmyk(70.5%, 79.5%, 0%, 69.4%)
CIE-LAB	lab(9.82, 24.73, -36.80)
CIE-LCH	lch(9.82, 44.34, 303.90°)
OKLab	oklab(23.33% 0.017 -0.1062)
OKLCH	oklch(23.33% 0.108 279.1)
XYZ	xyz(1.9133, 1.1026, 7.3183)
Luminance	0.0110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.72

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17104E #474E10

analogous

#10284E #17104E #36104E

triadic

#17104E #4E1710 #104E17

tetradic

#17104E #4E1028 #474E10 #104E36

square

#17104E #4E1028 #474E10 #104E36

split-complementary

#17104E #4E3610 #284E10

monochromatic

#070519 #08061B #17104E #261A81 #3525B4

Accessibility & contrast

On white

17.20

#17104E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#17104E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17104E

17.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17104E	#FFFFFF	#000000	##FFFFFF
##17104E	1.00	17.20	1.22	17.20
#FFFFFF	17.20	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D50

Deuteranopia (green-blind)

#00194D

Tritanopia (blue-blind)

#00212D

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #17104e;
/* rgb */ color: rgb(23, 16, 78);
/* oklch */ color: oklch(23.3% 0.108 279.1);

Tailwind

colors: {
  custom: {
    50: '#5d4f80',
    500: '#17104e',
    950: '#000000',
  },
}

SCSS

$custom: #17104e;
$custom-light: #5d4f80;
$custom-dark: #000000;

JSON

{
  "hex": "#17104e",
  "rgb": {
    "r": 23,
    "g": 16,
    "b": 78
  },
  "hsl": {
    "h": 246.774,
    "s": 65.957,
    "l": 18.431
  },
  "oklch": {
    "l": 0.23327,
    "c": 0.10757,
    "h": 279.1
  },
  "luminance": 0.01103
}

Semantic roles & 50–950 ramp

primary

#17104E

secondary

#7E8832

accent

#E93FD6

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #17104E

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

Preview Lab → · Contrast checker → · Palette generator →