#1B5F90#1B5F90

#1B5F90 is a mid, moderate cyan. Relative luminance 0.104; OKLCH L 46.9% C 0.103 H 244.9°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#1B5F90
RGB	rgb(27, 95, 144)
HSL	hsl(205, 68%, 34%)
HSV	hsv(205, 81%, 56%)
CMYK	cmyk(81.3%, 34%, 0%, 43.5%)
CIE-LAB	lab(38.60, -2.70, -32.87)
CIE-LCH	lch(38.60, 32.98, 265.31°)
OKLab	oklab(46.88% -0.0437 -0.0934)
OKLCH	oklch(46.88% 0.103 244.9)
XYZ	xyz(9.5763, 10.4299, 27.8886)
Luminance	0.1043 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5F90 #904C1B

analogous

#1B9086 #1B5F90 #1B2490

triadic

#1B5F90 #901B5F #5F901B

tetradic

#1B5F90 #861B90 #904C1B #24901B

square

#1B5F90 #861B90 #904C1B #24901B

split-complementary

#1B5F90 #901B24 #90861B

monochromatic

#081B29 #113D5C #1B5F90 #2581C4 #499FDD

Accessibility & contrast

On white

6.80

#1B5F90 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#1B5F90 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5F90

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5F90	#FFFFFF	#000000	##FFFFFF
##1B5F90	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#486192

Deuteranopia (green-blind)

#38568F

Tritanopia (blue-blind)

#006B71

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1b5f90;
/* rgb */ color: rgb(27, 95, 144);
/* oklch */ color: oklch(46.9% 0.103 244.9);

Tailwind

colors: {
  custom: {
    50: '#6b8cb1',
    500: '#1b5f90',
    950: '#000000',
  },
}

SCSS

$custom: #1b5f90;
$custom-light: #6b8cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5f90",
  "rgb": {
    "r": 27,
    "g": 95,
    "b": 144
  },
  "hsl": {
    "h": 205.128,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.46881,
    "c": 0.10314,
    "h": 244.9
  },
  "luminance": 0.10431
}

Semantic roles & 50–950 ramp

primary

#1B5F90

secondary

#BF7A48

accent

#863DEB

background

#F6F8FA

surface

#ECF0F5

border

#C7CBCF

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1B5F90

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

Preview Lab → · Contrast checker → · Palette generator →