#1B3E5F#1B3E5F

#1B3E5F is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.5% C 0.071 H 249.3°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E5F
RGB	rgb(27, 62, 95)
HSL	hsl(209, 56%, 24%)
HSV	hsv(209, 72%, 37%)
CMYK	cmyk(71.6%, 34.7%, 0%, 62.7%)
CIE-LAB	lab(25.27, -0.58, -23.30)
CIE-LCH	lch(25.27, 23.31, 268.58°)
OKLab	oklab(35.51% -0.025 -0.0659)
OKLCH	oklch(35.51% 0.071 249.3)
XYZ	xyz(4.2394, 4.5040, 11.4702)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E5F #5F3C1B

analogous

#1B5F5E #1B3E5F #1B1C5F

triadic

#1B3E5F #5F1B3E #3E5F1B

tetradic

#1B3E5F #5E1B5F #5F3C1B #1C5F1B

square

#1B3E5F #5E1B5F #5F3C1B #1C5F1B

split-complementary

#1B3E5F #5F1B1C #5F5E1B

monochromatic

#071018 #0D1F2F #1B3E5F #295D8F #367CBE

Accessibility & contrast

On white

11.05

#1B3E5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1B3E5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E5F

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E5F	#FFFFFF	#000000	##FFFFFF
##1B3E5F	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4060

Deuteranopia (green-blind)

#26395E

Tritanopia (blue-blind)

#00464A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1b3e5f;
/* rgb */ color: rgb(27, 62, 95);
/* oklch */ color: oklch(35.5% 0.071 249.3);

Tailwind

colors: {
  custom: {
    50: '#60738c',
    500: '#1b3e5f',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e5f;
$custom-light: #60738c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e5f",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 95
  },
  "hsl": {
    "h": 209.118,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.35506,
    "c": 0.07052,
    "h": 249.3
  },
  "luminance": 0.04504
}

Semantic roles & 50–950 ramp

primary

#1B3E5F

secondary

#956A41

accent

#9249DF

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #1B3E5F

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

Preview Lab → · Contrast checker → · Palette generator →