#1B5C8B#1B5C8B

#1B5C8B is a mid, moderate cyan. Relative luminance 0.098; OKLCH L 45.8% C 0.100 H 244.8°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#1B5C8B
RGB	rgb(27, 92, 139)
HSL	hsl(205, 67%, 33%)
HSV	hsv(205, 81%, 55%)
CMYK	cmyk(80.6%, 33.8%, 0%, 45.5%)
CIE-LAB	lab(37.39, -2.76, -31.76)
CIE-LCH	lch(37.39, 31.88, 265.03°)
OKLab	oklab(45.84% -0.0424 -0.0902)
OKLCH	oklch(45.84% 0.1 244.8)
XYZ	xyz(8.9375, 9.7503, 25.8320)
Luminance	0.0975 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5C8B #8B4A1B

analogous

#1B8B82 #1B5C8B #1B248B

triadic

#1B5C8B #8B1B5C #5C8B1B

tetradic

#1B5C8B #821B8B #8B4A1B #248B1B

square

#1B5C8B #821B8B #8B4A1B #248B1B

split-complementary

#1B5C8B #8B1B24 #8B821B

monochromatic

#071825 #113A58 #1B5C8B #257EBE #459CDB

Accessibility & contrast

On white

7.12

#1B5C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#1B5C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5C8B

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5C8B	#FFFFFF	#000000	##FFFFFF
##1B5C8B	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#465E8D

Deuteranopia (green-blind)

#36538A

Tritanopia (blue-blind)

#00676D

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1b5c8b;
/* rgb */ color: rgb(27, 92, 139);
/* oklch */ color: oklch(45.8% 0.100 244.8);

Tailwind

colors: {
  custom: {
    50: '#6a89ad',
    500: '#1b5c8b',
    950: '#000000',
  },
}

SCSS

$custom: #1b5c8b;
$custom-light: #6a89ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5c8b",
  "rgb": {
    "r": 27,
    "g": 92,
    "b": 139
  },
  "hsl": {
    "h": 205.179,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.45837,
    "c": 0.09968,
    "h": 244.8
  },
  "luminance": 0.09751
}

Semantic roles & 50–950 ramp

primary

#1B5C8B

secondary

#BC7745

accent

#863DEA

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #1B5C8B

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

Preview Lab → · Contrast checker → · Palette generator →