#17398D#17398D

#17398D is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.7% C 0.145 H 264.0°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#17398D
RGB	rgb(23, 57, 141)
HSL	hsl(223, 72%, 32%)
HSV	hsv(223, 84%, 55%)
CMYK	cmyk(83.7%, 59.6%, 0%, 44.7%)
CIE-LAB	lab(26.82, 21.17, -49.96)
CIE-LCH	lch(26.82, 54.26, 292.96°)
OKLab	oklab(37.69% -0.0153 -0.1444)
OKLCH	oklch(37.69% 0.145 264)
XYZ	xyz(6.6225, 5.0307, 25.8161)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17398D #8D6B17

analogous

#17748D #17398D #30178D

triadic

#17398D #8D1739 #398D17

tetradic

#17398D #8D1774 #8D6B17 #178D30

square

#17398D #8D1774 #8D6B17 #178D30

split-complementary

#17398D #8D3017 #748D17

monochromatic

#060E24 #0E2458 #17398D #204EC2 #3F6DE0

Accessibility & contrast

On white

10.47

#17398D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#17398D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17398D

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17398D	#FFFFFF	#000000	##FFFFFF
##17398D	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003A8B

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #17398d;
/* rgb */ color: rgb(23, 57, 141);
/* oklch */ color: oklch(37.7% 0.145 264.0);

Tailwind

colors: {
  custom: {
    50: '#6a6eaf',
    500: '#17398d',
    950: '#000000',
  },
}

SCSS

$custom: #17398d;
$custom-light: #6a6eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#17398d",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 141
  },
  "hsl": {
    "h": 222.712,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37686,
    "c": 0.1452,
    "h": 264
  },
  "luminance": 0.05032
}

Semantic roles & 50–950 ramp

primary

#17398D

secondary

#C09B40

accent

#BA39EF

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #17398D

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

Preview Lab → · Contrast checker → · Palette generator →