#1B618F#1B618F

#1B618F is a mid, moderate cyan. Relative luminance 0.108; OKLCH L 47.3% C 0.100 H 242.7°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#1B618F
RGB	rgb(27, 97, 143)
HSL	hsl(204, 68%, 33%)
HSV	hsv(204, 81%, 56%)
CMYK	cmyk(81.1%, 32.2%, 0%, 43.9%)
CIE-LAB	lab(39.18, -4.33, -31.36)
CIE-LCH	lch(39.18, 31.65, 262.14°)
OKLab	oklab(47.32% -0.046 -0.089)
OKLCH	oklch(47.32% 0.1 242.7)
XYZ	xyz(9.6827, 10.7644, 27.5487)
Luminance	0.1077 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B618F #8F491B

analogous

#1B8F83 #1B618F #1B278F

triadic

#1B618F #8F1B61 #618F1B

tetradic

#1B618F #831B8F #8F491B #278F1B

square

#1B618F #831B8F #8F491B #278F1B

split-complementary

#1B618F #8F1B27 #8F831B

monochromatic

#081B28 #113E5C #1B618F #2584C2 #48A2DC

Accessibility & contrast

On white

6.66

#1B618F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#1B618F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B618F

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B618F	#FFFFFF	#000000	##FFFFFF
##1B618F	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B6291

Deuteranopia (green-blind)

#3B588E

Tritanopia (blue-blind)

#006C71

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1b618f;
/* rgb */ color: rgb(27, 97, 143);
/* oklch */ color: oklch(47.3% 0.100 242.7);

Tailwind

colors: {
  custom: {
    50: '#6b8db0',
    500: '#1b618f',
    950: '#000000',
  },
}

SCSS

$custom: #1b618f;
$custom-light: #6b8db0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b618f",
  "rgb": {
    "r": 27,
    "g": 97,
    "b": 143
  },
  "hsl": {
    "h": 203.793,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.4732,
    "c": 0.10013,
    "h": 242.7
  },
  "luminance": 0.10766
}

Semantic roles & 50–950 ramp

primary

#1B618F

secondary

#BE7748

accent

#823DEB

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1B618F

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

Preview Lab → · Contrast checker → · Palette generator →