#1B3E65#1B3E65

#1B3E65 is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.9% C 0.079 H 253.0°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E65
RGB	rgb(27, 62, 101)
HSL	hsl(212, 58%, 25%)
HSV	hsv(212, 73%, 40%)
CMYK	cmyk(73.3%, 38.6%, 0%, 60.4%)
CIE-LAB	lab(25.62, 1.81, -26.64)
CIE-LCH	lch(25.62, 26.70, 273.88°)
OKLab	oklab(35.89% -0.0231 -0.0757)
OKLCH	oklch(35.89% 0.079 253)
XYZ	xyz(4.5227, 4.6174, 12.9623)
Luminance	0.0462 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E65 #65421B

analogous

#1B6365 #1B3E65 #1D1B65

triadic

#1B3E65 #651B3E #3E651B

tetradic

#1B3E65 #651B63 #65421B #1B651D

square

#1B3E65 #651B63 #65421B #1B651D

split-complementary

#1B3E65 #651D1B #63651B

monochromatic

#060F18 #0E2035 #1B3E65 #285C95 #3579C6

Accessibility & contrast

On white

10.92

#1B3E65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1B3E65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E65

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E65	#FFFFFF	#000000	##FFFFFF
##1B3E65	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4067

Deuteranopia (green-blind)

#223A64

Tritanopia (blue-blind)

#00474C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b3e65;
/* rgb */ color: rgb(27, 62, 101);
/* oklch */ color: oklch(35.9% 0.079 253.0);

Tailwind

colors: {
  custom: {
    50: '#617291',
    500: '#1b3e65',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e65;
$custom-light: #617291;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e65",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 101
  },
  "hsl": {
    "h": 211.622,
    "s": 57.813,
    "l": 25.098
  },
  "oklch": {
    "l": 0.35888,
    "c": 0.07916,
    "h": 253
  },
  "luminance": 0.04618
}

Semantic roles & 50–950 ramp

primary

#1B3E65

secondary

#9A7041

accent

#9847E1

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#05080C

muted

#7A7B7D

Preview Lab

Preview with #1B3E65

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

Preview Lab → · Contrast checker → · Palette generator →