#1B435F#1B435F

#1B435F is a dark, moderate cyan. Relative luminance 0.051; OKLCH L 36.8% C 0.066 H 242.1°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B435F
RGB	rgb(27, 67, 95)
HSL	hsl(205, 56%, 24%)
HSV	hsv(205, 72%, 37%)
CMYK	cmyk(71.6%, 29.5%, 0%, 62.7%)
CIE-LAB	lab(26.94, -3.89, -20.68)
CIE-LCH	lch(26.94, 21.04, 259.34°)
OKLab	oklab(36.82% -0.0308 -0.0583)
OKLCH	oklch(36.82% 0.066 242.1)
XYZ	xyz(4.5239, 5.0731, 11.5650)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B435F #5F371B

analogous

#1B5F59 #1B435F #1B215F

triadic

#1B435F #5F1B43 #435F1B

tetradic

#1B435F #591B5F #5F371B #215F1B

square

#1B435F #591B5F #5F371B #215F1B

split-complementary

#1B435F #5F1B21 #5F591B

monochromatic

#071118 #0D212F #1B435F #29658F #3686BE

Accessibility & contrast

On white

10.42

#1B435F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1B435F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B435F

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B435F	#FFFFFF	#000000	##FFFFFF
##1B435F	1.00	10.42	2.01	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#364360

Deuteranopia (green-blind)

#2D3D5E

Tritanopia (blue-blind)

#004A4D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b435f;
/* rgb */ color: rgb(27, 67, 95);
/* oklch */ color: oklch(36.8% 0.066 242.1);

Tailwind

colors: {
  custom: {
    50: '#60778c',
    500: '#1b435f',
    950: '#000000',
  },
}

SCSS

$custom: #1b435f;
$custom-light: #60778c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b435f",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 95
  },
  "hsl": {
    "h": 204.706,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.36823,
    "c": 0.06593,
    "h": 242.1
  },
  "luminance": 0.05074
}

Semantic roles & 50–950 ramp

primary

#1B435F

secondary

#956441

accent

#8749DF

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #1B435F

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

Preview Lab → · Contrast checker → · Palette generator →