#1B4C8F#1B4C8F

#1B4C8F is a dark, vivid cyan. Relative luminance 0.074; OKLCH L 42.2% C 0.123 H 257.4°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B4C8F
RGB	rgb(27, 76, 143)
HSL	hsl(215, 68%, 33%)
HSV	hsv(215, 81%, 56%)
CMYK	cmyk(81.1%, 46.9%, 0%, 43.9%)
CIE-LAB	lab(32.67, 9.29, -41.72)
CIE-LCH	lch(32.67, 42.74, 282.55°)
OKLab	oklab(42.22% -0.0268 -0.1197)
OKLCH	oklch(42.22% 0.123 257.4)
XYZ	xyz(7.9925, 7.3841, 26.9853)
Luminance	0.0738 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4C8F #8F5E1B

analogous

#1B868F #1B4C8F #241B8F

triadic

#1B4C8F #8F1B4C #4C8F1B

tetradic

#1B4C8F #8F1B86 #8F5E1B #1B8F24

square

#1B4C8F #8F1B86 #8F5E1B #1B8F24

split-complementary

#1B4C8F #8F241B #868F1B

monochromatic

#081528 #11315C #1B4C8F #2567C2 #4887DC

Accessibility & contrast

On white

8.48

#1B4C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1B4C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4C8F

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4C8F	#FFFFFF	#000000	##FFFFFF
##1B4C8F	1.00	8.48	2.48	8.48
#FFFFFF	8.48	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#285292

Deuteranopia (green-blind)

#0C488E

Tritanopia (blue-blind)

#005C66

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4c8f;
/* rgb */ color: rgb(27, 76, 143);
/* oklch */ color: oklch(42.2% 0.123 257.4);

Tailwind

colors: {
  custom: {
    50: '#6b7db0',
    500: '#1b4c8f',
    950: '#000000',
  },
}

SCSS

$custom: #1b4c8f;
$custom-light: #6b7db0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4c8f",
  "rgb": {
    "r": 27,
    "g": 76,
    "b": 143
  },
  "hsl": {
    "h": 214.655,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.42223,
    "c": 0.12269,
    "h": 257.4
  },
  "luminance": 0.07385
}

Semantic roles & 50–950 ramp

primary

#1B4C8F

secondary

#BE8C48

accent

#A13DEB

background

#F6F7FA

surface

#ECEEF5

border

#C7C9CF

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1B4C8F

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

Preview Lab → · Contrast checker → · Palette generator →