#171B76#171B76

#171B76 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.7% C 0.150 H 270.9°. Best body text is #FFFFFF at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#171B76
RGB	rgb(23, 27, 118)
HSL	hsl(237, 67%, 28%)
HSV	hsv(237, 81%, 46%)
CMYK	cmyk(80.5%, 77.1%, 0%, 53.7%)
CIE-LAB	lab(16.86, 32.48, -51.80)
CIE-LCH	lch(16.86, 61.14, 302.09°)
OKLab	oklab(29.7% 0.0025 -0.15)
OKLCH	oklch(29.7% 0.15 270.9)
XYZ	xyz(4.0142, 2.2736, 17.3633)
Luminance	0.0227 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B76 #767217

analogous

#174A76 #171B76 #431776

triadic

#171B76 #76171B #1B7617

tetradic

#171B76 #76174A #767217 #177643

square

#171B76 #76174A #767217 #177643

split-complementary

#171B76 #764317 #4A7617

monochromatic

#05061A #0D0F43 #171B76 #2127A9 #3138D7

Accessibility & contrast

On white

14.43

#171B76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#171B76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B76

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B76	#FFFFFF	#000000	##FFFFFF
##171B76	1.00	14.43	1.45	14.43
#FFFFFF	14.43	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E79

Deuteranopia (green-blind)

#002574

Tritanopia (blue-blind)

#003647

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171b76;
/* rgb */ color: rgb(23, 27, 118);
/* oklch */ color: oklch(29.7% 0.150 270.9);

Tailwind

colors: {
  custom: {
    50: '#67589f',
    500: '#171b76',
    950: '#000000',
  },
}

SCSS

$custom: #171b76;
$custom-light: #67589f;
$custom-dark: #000000;

JSON

{
  "hex": "#171b76",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 118
  },
  "hsl": {
    "h": 237.474,
    "s": 67.376,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29697,
    "c": 0.15001,
    "h": 270.9
  },
  "luminance": 0.02274
}

Semantic roles & 50–950 ramp

primary

#171B76

secondary

#ABA73E

accent

#E33EEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030F

muted

#7A787E

Preview Lab

Preview with #171B76

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

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