#1B3D60#1B3D60

#1B3D60 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.3% C 0.073 H 251.2°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B3D60
RGB	rgb(27, 61, 96)
HSL	hsl(210, 56%, 24%)
HSV	hsv(210, 72%, 38%)
CMYK	cmyk(71.9%, 36.5%, 0%, 62.4%)
CIE-LAB	lab(25.00, 0.49, -24.38)
CIE-LCH	lch(25.00, 24.39, 271.16°)
OKLab	oklab(35.31% -0.0235 -0.0691)
OKLCH	oklch(35.31% 0.073 251.2)
XYZ	xyz(4.2313, 4.4146, 11.6932)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3D60 #603E1B

analogous

#1B6060 #1B3D60 #1C1B60

triadic

#1B3D60 #601B3D #3D601B

tetradic

#1B3D60 #601B60 #603E1B #1B601C

square

#1B3D60 #601B60 #603E1B #1B601C

split-complementary

#1B3D60 #601C1B #60601B

monochromatic

#070F18 #0E1F30 #1B3D60 #285B90 #367AC0

Accessibility & contrast

On white

11.15

#1B3D60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1B3D60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3D60

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3D60	#FFFFFF	#000000	##FFFFFF
##1B3D60	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3F61

Deuteranopia (green-blind)

#24385F

Tritanopia (blue-blind)

#00454A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b3d60;
/* rgb */ color: rgb(27, 61, 96);
/* oklch */ color: oklch(35.3% 0.073 251.2);

Tailwind

colors: {
  custom: {
    50: '#60728d',
    500: '#1b3d60',
    950: '#000000',
  },
}

SCSS

$custom: #1b3d60;
$custom-light: #60728d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3d60",
  "rgb": {
    "r": 27,
    "g": 61,
    "b": 96
  },
  "hsl": {
    "h": 210.435,
    "s": 56.098,
    "l": 24.118
  },
  "oklch": {
    "l": 0.35309,
    "c": 0.07301,
    "h": 251.2
  },
  "luminance": 0.04415
}

Semantic roles & 50–950 ramp

primary

#1B3D60

secondary

#966C41

accent

#9548DF

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #1B3D60

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

Preview Lab → · Contrast checker → · Palette generator →