#17307F#17307F

#17307F is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.137 H 265.9°. Best body text is #FFFFFF at 11.89:1 contrast (WCAG AA passes).

Color values

HEX	#17307F
RGB	rgb(23, 48, 127)
HSL	hsl(226, 69%, 29%)
HSV	hsv(226, 82%, 50%)
CMYK	cmyk(81.9%, 62.2%, 0%, 50.2%)
CIE-LAB	lab(23.09, 21.79, -47.30)
CIE-LCH	lch(23.09, 52.07, 294.73°)
OKLab	oklab(34.52% -0.0099 -0.1367)
OKLCH	oklch(34.52% 0.137 265.9)
XYZ	xyz(5.2397, 3.8278, 20.5372)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17307F #7F6617

analogous

#17647F #17307F #32177F

triadic

#17307F #7F1730 #307F17

tetradic

#17307F #7F1764 #7F6617 #177F32

square

#17307F #7F1764 #7F6617 #177F32

split-complementary

#17307F #7F3217 #647F17

monochromatic

#050A1A #0E1C4B #17307F #2044B3 #365DDB

Accessibility & contrast

On white

11.89

#17307F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#17307F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17307F

11.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17307F	#FFFFFF	#000000	##FFFFFF
##17307F	1.00	11.89	1.77	11.89
#FFFFFF	11.89	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C82

Deuteranopia (green-blind)

#00327D

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #17307f;
/* rgb */ color: rgb(23, 48, 127);
/* oklch */ color: oklch(34.5% 0.137 265.9);

Tailwind

colors: {
  custom: {
    50: '#6767a5',
    500: '#17307f',
    950: '#000000',
  },
}

SCSS

$custom: #17307f;
$custom-light: #6767a5;
$custom-dark: #000000;

JSON

{
  "hex": "#17307f",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 127
  },
  "hsl": {
    "h": 225.577,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.3452,
    "c": 0.13709,
    "h": 265.9
  },
  "luminance": 0.03828
}

Semantic roles & 50–950 ramp

primary

#17307F

secondary

#B4973E

accent

#C23CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #17307F

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

Preview Lab → · Contrast checker → · Palette generator →