#1B4D64#1B4D64

#1B4D64 is a dark, moderate cyan. Relative luminance 0.065; OKLCH L 39.8% C 0.065 H 231.7°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D64
RGB	rgb(27, 77, 100)
HSL	hsl(199, 57%, 25%)
HSV	hsv(199, 73%, 39%)
CMYK	cmyk(73%, 23%, 0%, 60.8%)
CIE-LAB	lab(30.55, -8.35, -18.27)
CIE-LCH	lch(30.55, 20.09, 245.44°)
OKLab	oklab(39.77% -0.0405 -0.0513)
OKLCH	oklch(39.77% 0.065 231.7)
XYZ	xyz(5.4052, 6.4603, 13.0162)
Luminance	0.0646 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D64 #64321B

analogous

#1B6456 #1B4D64 #1B2964

triadic

#1B4D64 #641B4D #4D641B

tetradic

#1B4D64 #561B64 #64321B #29641B

square

#1B4D64 #561B64 #64321B #29641B

split-complementary

#1B4D64 #641B29 #64561B

monochromatic

#071318 #0E2834 #1B4D64 #287294 #3597C4

Accessibility & contrast

On white

9.16

#1B4D64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1B4D64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D64

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D64	#FFFFFF	#000000	##FFFFFF
##1B4D64	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#424C65

Deuteranopia (green-blind)

#374564

Tritanopia (blue-blind)

#005355

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4d64;
/* rgb */ color: rgb(27, 77, 100);
/* oklch */ color: oklch(39.8% 0.065 231.7);

Tailwind

colors: {
  custom: {
    50: '#627e90',
    500: '#1b4d64',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d64;
$custom-light: #627e90;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d64",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 100
  },
  "hsl": {
    "h": 198.904,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.39765,
    "c": 0.06531,
    "h": 231.7
  },
  "luminance": 0.06461
}

Semantic roles & 50–950 ramp

primary

#1B4D64

secondary

#995D41

accent

#7747E1

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#050A0C

muted

#7A7C7D

Preview Lab

Preview with #1B4D64

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

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