#1B4665#1B4665

#1B4665 is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.0% C 0.071 H 243.2°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#1B4665
RGB	rgb(27, 70, 101)
HSL	hsl(205, 58%, 25%)
HSV	hsv(205, 73%, 40%)
CMYK	cmyk(73.3%, 30.7%, 0%, 60.4%)
CIE-LAB	lab(28.25, -3.52, -22.48)
CIE-LCH	lch(28.25, 22.75, 261.09°)
OKLab	oklab(37.96% -0.0321 -0.0635)
OKLCH	oklch(37.96% 0.071 243.2)
XYZ	xyz(4.9902, 5.5524, 13.1181)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4665 #653A1B

analogous

#1B655F #1B4665 #1B2165

triadic

#1B4665 #651B46 #46651B

tetradic

#1B4665 #5F1B65 #653A1B #21651B

square

#1B4665 #5F1B65 #653A1B #21651B

split-complementary

#1B4665 #651B21 #655F1B

monochromatic

#061118 #0E2535 #1B4665 #286795 #3589C6

Accessibility & contrast

On white

9.95

#1B4665 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1B4665 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4665

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4665	#FFFFFF	#000000	##FFFFFF
##1B4665	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#384766

Deuteranopia (green-blind)

#2E3F64

Tritanopia (blue-blind)

#004E51

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b4665;
/* rgb */ color: rgb(27, 70, 101);
/* oklch */ color: oklch(38.0% 0.071 243.2);

Tailwind

colors: {
  custom: {
    50: '#617991',
    500: '#1b4665',
    950: '#000000',
  },
}

SCSS

$custom: #1b4665;
$custom-light: #617991;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4665",
  "rgb": {
    "r": 27,
    "g": 70,
    "b": 101
  },
  "hsl": {
    "h": 205.135,
    "s": 57.813,
    "l": 25.098
  },
  "oklch": {
    "l": 0.37962,
    "c": 0.07113,
    "h": 243.2
  },
  "luminance": 0.05553
}

Semantic roles & 50–950 ramp

primary

#1B4665

secondary

#9A6741

accent

#8747E1

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#05090C

muted

#7A7B7D

Preview Lab

Preview with #1B4665

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

Preview Lab → · Contrast checker → · Palette generator →