#172C50#172C50

#172C50 is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.6% C 0.071 H 260.5°. Best body text is #FFFFFF at 13.88:1 contrast (WCAG AA passes).

Color values

HEX	#172C50
RGB	rgb(23, 44, 80)
HSL	hsl(218, 55%, 20%)
HSV	hsv(218, 71%, 31%)
CMYK	cmyk(71.2%, 45%, 0%, 68.6%)
CIE-LAB	lab(18.20, 5.18, -24.59)
CIE-LCH	lch(18.20, 25.13, 281.90°)
OKLab	oklab(29.64% -0.0117 -0.0701)
OKLCH	oklch(29.64% 0.071 260.5)
XYZ	xyz(2.7015, 2.5625, 7.9401)
Luminance	0.0256 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C50 #503B17

analogous

#174850 #172C50 #1F1750

triadic

#172C50 #50172C #2C5017

tetradic

#172C50 #501748 #503B17 #17501F

square

#172C50 #501748 #503B17 #17501F

split-complementary

#172C50 #501F17 #485017

monochromatic

#070D18 #091220 #172C50 #254680 #3260AF

Accessibility & contrast

On white

13.88

#172C50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#172C50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C50

13.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C50	#FFFFFF	#000000	##FFFFFF
##172C50	1.00	13.88	1.51	13.88
#FFFFFF	13.88	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C2F51

Deuteranopia (green-blind)

#132A4F

Tritanopia (blue-blind)

#00343A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #172c50;
/* rgb */ color: rgb(23, 44, 80);
/* oklch */ color: oklch(29.6% 0.071 260.5);

Tailwind

colors: {
  custom: {
    50: '#5b6481',
    500: '#172c50',
    950: '#000000',
  },
}

SCSS

$custom: #172c50;
$custom-light: #5b6481;
$custom-dark: #000000;

JSON

{
  "hex": "#172c50",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 80
  },
  "hsl": {
    "h": 217.895,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.2964,
    "c": 0.07105,
    "h": 260.5
  },
  "luminance": 0.02563
}

Semantic roles & 50–950 ramp

primary

#172C50

secondary

#876B3C

accent

#A849DF

background

#F5F5F7

surface

#E9EAEE

border

#C5C6C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #172C50

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

Preview Lab → · Contrast checker → · Palette generator →