#17103F#17103F

#17103F is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.7% C 0.085 H 283.5°. Best body text is #FFFFFF at 17.76:1 contrast (WCAG AA passes).

Color values

HEX	#17103F
RGB	rgb(23, 16, 63)
HSL	hsl(249, 59%, 15%)
HSV	hsv(249, 75%, 25%)
CMYK	cmyk(63.5%, 74.6%, 0%, 75.3%)
CIE-LAB	lab(8.23, 19.15, -28.88)
CIE-LCH	lch(8.23, 34.66, 303.54°)
OKLab	oklab(21.7% 0.0199 -0.083)
OKLCH	oklch(21.7% 0.085 283.5)
XYZ	xyz(1.4356, 0.9115, 4.8020)
Luminance	0.0091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 4.19

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17103F #383F10

analogous

#10203F #17103F #2E103F

triadic

#17103F #3F1710 #103F17

tetradic

#17103F #3F1020 #383F10 #103F2E

square

#17103F #3F1020 #383F10 #103F2E

split-complementary

#17103F #3F2E10 #203F10

monochromatic

#090618 #090618 #17103F #291C70 #3B29A1

Accessibility & contrast

On white

17.76

#17103F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#17103F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17103F

17.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17103F	#FFFFFF	#000000	##FFFFFF
##17103F	1.00	17.76	1.18	17.76
#FFFFFF	17.76	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001940

Deuteranopia (green-blind)

#00163E

Tritanopia (blue-blind)

#051C25

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #17103f;
/* rgb */ color: rgb(23, 16, 63);
/* oklch */ color: oklch(21.7% 0.085 283.5);

Tailwind

colors: {
  custom: {
    50: '#594e74',
    500: '#17103f',
    950: '#000000',
  },
}

SCSS

$custom: #17103f;
$custom-light: #594e74;
$custom-dark: #000000;

JSON

{
  "hex": "#17103f",
  "rgb": {
    "r": 23,
    "g": 16,
    "b": 63
  },
  "hsl": {
    "h": 248.936,
    "s": 59.494,
    "l": 15.49
  },
  "oklch": {
    "l": 0.21702,
    "c": 0.08537,
    "h": 283.5
  },
  "luminance": 0.00912
}

Semantic roles & 50–950 ramp

primary

#17103F

secondary

#6E7932

accent

#E345CB

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040108

muted

#79777B

Preview Lab

Preview with #17103F

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

Preview Lab → · Contrast checker → · Palette generator →