#172A54#172A54

#172A54 is a dark, moderate blue. Relative luminance 0.025; OKLCH L 29.4% C 0.080 H 263.9°. Best body text is #FFFFFF at 14.04:1 contrast (WCAG AA passes).

Color values

HEX	#172A54
RGB	rgb(23, 42, 84)
HSL	hsl(221, 57%, 21%)
HSV	hsv(221, 73%, 33%)
CMYK	cmyk(72.6%, 50%, 0%, 67.1%)
CIE-LAB	lab(17.82, 8.30, -27.89)
CIE-LCH	lch(17.82, 29.10, 286.58°)
OKLab	oklab(29.44% -0.0086 -0.0798)
OKLCH	oklch(29.44% 0.08 263.9)
XYZ	xyz(2.7810, 2.4779, 8.7175)
Luminance	0.0248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A54 #544117

analogous

#174854 #172A54 #221754

triadic

#172A54 #54172A #2A5417

tetradic

#172A54 #541748 #544117 #175422

square

#172A54 #541748 #544117 #175422

split-complementary

#172A54 #542217 #485417

monochromatic

#070C18 #0A1224 #172A54 #244284 #315AB4

Accessibility & contrast

On white

14.04

#172A54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#172A54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A54

14.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A54	#FFFFFF	#000000	##FFFFFF
##172A54	1.00	14.04	1.50	14.04
#FFFFFF	14.04	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#152F56

Deuteranopia (green-blind)

#092953

Tritanopia (blue-blind)

#00343A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #172a54;
/* rgb */ color: rgb(23, 42, 84);
/* oklch */ color: oklch(29.4% 0.080 263.9);

Tailwind

colors: {
  custom: {
    50: '#5c6384',
    500: '#172a54',
    950: '#000000',
  },
}

SCSS

$custom: #172a54;
$custom-light: #5c6384;
$custom-dark: #000000;

JSON

{
  "hex": "#172a54",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 84
  },
  "hsl": {
    "h": 221.311,
    "s": 57.009,
    "l": 20.98
  },
  "oklch": {
    "l": 0.29436,
    "c": 0.08025,
    "h": 263.9
  },
  "luminance": 0.02478
}

Semantic roles & 50–950 ramp

primary

#172A54

secondary

#8B723C

accent

#B148E0

background

#F5F5F8

surface

#E9EAEF

border

#C5C6CA

text

#04050B

muted

#79797C

Preview Lab

Preview with #172A54

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

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