#1B4F7F#1B4F7F

#1B4F7F is a dark, moderate cyan. Relative luminance 0.074; OKLCH L 41.9% C 0.097 H 249.9°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F7F
RGB	rgb(27, 79, 127)
HSL	hsl(209, 65%, 30%)
HSV	hsv(209, 79%, 50%)
CMYK	cmyk(78.7%, 37.8%, 0%, 50.2%)
CIE-LAB	lab(32.61, 0.85, -31.97)
CIE-LCH	lch(32.61, 31.99, 271.52°)
OKLab	oklab(41.86% -0.0333 -0.0911)
OKLCH	oklch(41.86% 0.097 249.9)
XYZ	xyz(7.0773, 7.3565, 21.1215)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F7F #7F4B1B

analogous

#1B7F7D #1B4F7F #1B1D7F

triadic

#1B4F7F #7F1B4F #4F7F1B

tetradic

#1B4F7F #7D1B7F #7F4B1B #1D7F1B

square

#1B4F7F #7D1B7F #7F4B1B #1D7F1B

split-complementary

#1B4F7F #7F1B1D #7F7D1B

monochromatic

#06101A #10304D #1B4F7F #266EB1 #3E8DD6

Accessibility & contrast

On white

8.50

#1B4F7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#1B4F7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F7F

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F7F	#FFFFFF	#000000	##FFFFFF
##1B4F7F	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#395281

Deuteranopia (green-blind)

#2A497E

Tritanopia (blue-blind)

#005A61

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4f7f;
/* rgb */ color: rgb(27, 79, 127);
/* oklch */ color: oklch(41.9% 0.097 249.9);

Tailwind

colors: {
  custom: {
    50: '#6780a4',
    500: '#1b4f7f',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f7f;
$custom-light: #6780a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f7f",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 127
  },
  "hsl": {
    "h": 208.8,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.41855,
    "c": 0.09696,
    "h": 249.9
  },
  "luminance": 0.07357
}

Semantic roles & 50–950 ramp

primary

#1B4F7F

secondary

#B37943

accent

#9140E8

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B4F7F

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

Preview Lab → · Contrast checker → · Palette generator →