#1B598D#1B598D

#1B598D is a mid, moderate cyan. Relative luminance 0.093; OKLCH L 45.2% C 0.105 H 248.3°. Best body text is #FFFFFF at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#1B598D
RGB	rgb(27, 89, 141)
HSL	hsl(207, 68%, 33%)
HSV	hsv(207, 81%, 55%)
CMYK	cmyk(80.9%, 36.9%, 0%, 44.7%)
CIE-LAB	lab(36.56, -0.08, -34.30)
CIE-LCH	lch(36.56, 34.30, 269.87°)
OKLab	oklab(45.22% -0.0389 -0.0977)
OKLCH	oklch(45.22% 0.105 248.3)
XYZ	xyz(8.8302, 9.2998, 26.5238)
Luminance	0.0930 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B598D #8D4F1B

analogous

#1B8D88 #1B598D #1B208D

triadic

#1B598D #8D1B59 #598D1B

tetradic

#1B598D #881B8D #8D4F1B #208D1B

square

#1B598D #881B8D #8D4F1B #208D1B

split-complementary

#1B598D #8D1B20 #8D881B

monochromatic

#071826 #11395A #1B598D #2579C0 #4798DC

Accessibility & contrast

On white

7.34

#1B598D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#1B598D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B598D

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B598D	#FFFFFF	#000000	##FFFFFF
##1B598D	1.00	7.34	2.86	7.34
#FFFFFF	7.34	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#415C8F

Deuteranopia (green-blind)

#30518C

Tritanopia (blue-blind)

#00656C

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b598d;
/* rgb */ color: rgb(27, 89, 141);
/* oklch */ color: oklch(45.2% 0.105 248.3);

Tailwind

colors: {
  custom: {
    50: '#6a87ae',
    500: '#1b598d',
    950: '#000000',
  },
}

SCSS

$custom: #1b598d;
$custom-light: #6a87ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b598d",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 141
  },
  "hsl": {
    "h": 207.368,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.45215,
    "c": 0.10515,
    "h": 248.3
  },
  "luminance": 0.09301
}

Semantic roles & 50–950 ramp

primary

#1B598D

secondary

#BD7D46

accent

#8C3DEB

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1B598D

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

Preview Lab → · Contrast checker → · Palette generator →