#174B81#174B81

#174B81 is a dark, moderate cyan. Relative luminance 0.068; OKLCH L 40.9% C 0.105 H 252.7°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#174B81
RGB	rgb(23, 75, 129)
HSL	hsl(211, 70%, 30%)
HSV	hsv(211, 82%, 51%)
CMYK	cmyk(82.2%, 41.9%, 0%, 49.4%)
CIE-LAB	lab(31.34, 3.81, -35.23)
CIE-LCH	lch(31.34, 35.43, 276.17°)
OKLab	oklab(40.87% -0.0313 -0.1007)
OKLCH	oklch(40.87% 0.105 252.7)
XYZ	xyz(6.8304, 6.7985, 21.7169)
Luminance	0.0680 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#174B81 #814D17

analogous

#178081 #174B81 #181781

triadic

#174B81 #81174B #4B8117

tetradic

#174B81 #811780 #814D17 #178118

square

#174B81 #811780 #814D17 #178118

split-complementary

#174B81 #811817 #808117

monochromatic

#050F1A #0E2D4D #174B81 #2069B5 #3788DB

Accessibility & contrast

On white

8.90

#174B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#174B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #174B81

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##174B81	#FFFFFF	#000000	##FFFFFF
##174B81	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314F83

Deuteranopia (green-blind)

#1F4580

Tritanopia (blue-blind)

#00585F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #174b81;
/* rgb */ color: rgb(23, 75, 129);
/* oklch */ color: oklch(40.9% 0.105 252.7);

Tailwind

colors: {
  custom: {
    50: '#667ca6',
    500: '#174b81',
    950: '#000000',
  },
}

SCSS

$custom: #174b81;
$custom-light: #667ca6;
$custom-dark: #000000;

JSON

{
  "hex": "#174b81",
  "rgb": {
    "r": 23,
    "g": 75,
    "b": 129
  },
  "hsl": {
    "h": 210.566,
    "s": 69.737,
    "l": 29.804
  },
  "oklch": {
    "l": 0.40874,
    "c": 0.10547,
    "h": 252.7
  },
  "luminance": 0.06799
}

Semantic roles & 50–950 ramp

primary

#174B81

secondary

#B57B3E

accent

#963BED

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #174B81

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

Preview Lab → · Contrast checker → · Palette generator →