#1B638C#1B638C

#1B638C is a mid, moderate cyan. Relative luminance 0.111; OKLCH L 47.7% C 0.095 H 239.0°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B638C
RGB	rgb(27, 99, 140)
HSL	hsl(202, 68%, 33%)
HSV	hsv(202, 81%, 55%)
CMYK	cmyk(80.7%, 29.3%, 0%, 45.1%)
CIE-LAB	lab(39.66, -6.71, -28.79)
CIE-LCH	lch(39.66, 29.56, 256.89°)
OKLab	oklab(47.65% -0.0489 -0.0815)
OKLCH	oklch(47.65% 0.095 239)
XYZ	xyz(9.6456, 11.0490, 26.4302)
Luminance	0.1105 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B638C #8C441B

analogous

#1B8C7C #1B638C #1B2A8C

triadic

#1B638C #8C1B63 #638C1B

tetradic

#1B638C #7C1B8C #8C441B #2A8C1B

square

#1B638C #7C1B8C #8C441B #2A8C1B

split-complementary

#1B638C #8C1B2A #8C7C1B

monochromatic

#071A25 #113F59 #1B638C #2587BF #46A5DB

Accessibility & contrast

On white

6.54

#1B638C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#1B638C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B638C

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B638C	#FFFFFF	#000000	##FFFFFF
##1B638C	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50638E

Deuteranopia (green-blind)

#40598B

Tritanopia (blue-blind)

#006D71

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #1b638c;
/* rgb */ color: rgb(27, 99, 140);
/* oklch */ color: oklch(47.7% 0.095 239.0);

Tailwind

colors: {
  custom: {
    50: '#6a8fae',
    500: '#1b638c',
    950: '#000000',
  },
}

SCSS

$custom: #1b638c;
$custom-light: #6a8fae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b638c",
  "rgb": {
    "r": 27,
    "g": 99,
    "b": 140
  },
  "hsl": {
    "h": 201.77,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.47652,
    "c": 0.09501,
    "h": 239
  },
  "luminance": 0.1105
}

Semantic roles & 50–950 ramp

primary

#1B638C

secondary

#BD7146

accent

#7C3DEB

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1B638C

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

Preview Lab → · Contrast checker → · Palette generator →