#1B598A#1B598A

#1B598A is a mid, moderate cyan. Relative luminance 0.092; OKLCH L 45.0% C 0.101 H 246.8°. Best body text is #FFFFFF at 7.39:1 contrast (WCAG AA passes).

Color values

HEX	#1B598A
RGB	rgb(27, 89, 138)
HSL	hsl(206, 67%, 32%)
HSV	hsv(206, 80%, 54%)
CMYK	cmyk(80.4%, 35.5%, 0%, 45.9%)
CIE-LAB	lab(36.39, -1.26, -32.73)
CIE-LCH	lch(36.39, 32.76, 267.80°)
OKLab	oklab(45.03% -0.0398 -0.0931)
OKLCH	oklch(45.03% 0.101 246.8)
XYZ	xyz(8.6101, 9.2117, 25.3641)
Luminance	0.0921 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B598A #8A4C1B

analogous

#1B8A83 #1B598A #1B228A

triadic

#1B598A #8A1B59 #598A1B

tetradic

#1B598A #831B8A #8A4C1B #228A1B

square

#1B598A #831B8A #8A4C1B #228A1B

split-complementary

#1B598A #8A1B22 #8A831B

monochromatic

#071724 #113857 #1B598A #257ABD #4598DB

Accessibility & contrast

On white

7.39

#1B598A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#1B598A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B598A

7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B598A	#FFFFFF	#000000	##FFFFFF
##1B598A	1.00	7.39	2.84	7.39
#FFFFFF	7.39	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#425B8C

Deuteranopia (green-blind)

#325189

Tritanopia (blue-blind)

#00656B

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b598a;
/* rgb */ color: rgb(27, 89, 138);
/* oklch */ color: oklch(45.0% 0.101 246.8);

Tailwind

colors: {
  custom: {
    50: '#6a87ac',
    500: '#1b598a',
    950: '#000000',
  },
}

SCSS

$custom: #1b598a;
$custom-light: #6a87ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b598a",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 138
  },
  "hsl": {
    "h": 206.486,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.4503,
    "c": 0.10127,
    "h": 246.8
  },
  "luminance": 0.09213
}

Semantic roles & 50–950 ramp

primary

#1B598A

secondary

#BC7945

accent

#8A3EEA

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #1B598A

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

Preview Lab → · Contrast checker → · Palette generator →