#1B4D90#1B4D90

#1B4D90 is a dark, vivid cyan. Relative luminance 0.076; OKLCH L 42.5% C 0.123 H 257.1°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D90
RGB	rgb(27, 77, 144)
HSL	hsl(214, 68%, 34%)
HSV	hsv(214, 81%, 56%)
CMYK	cmyk(81.3%, 46.5%, 0%, 43.5%)
CIE-LAB	lab(33.03, 9.02, -41.74)
CIE-LCH	lch(33.03, 42.70, 282.19°)
OKLab	oklab(42.53% -0.0274 -0.1198)
OKLCH	oklch(42.53% 0.123 257.1)
XYZ	xyz(8.1381, 7.5534, 27.4092)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D90 #905E1B

analogous

#1B8790 #1B4D90 #231B90

triadic

#1B4D90 #901B4D #4D901B

tetradic

#1B4D90 #901B87 #905E1B #1B9023

square

#1B4D90 #901B87 #905E1B #1B9023

split-complementary

#1B4D90 #90231B #87901B

monochromatic

#081629 #11315C #1B4D90 #2569C4 #4988DD

Accessibility & contrast

On white

8.36

#1B4D90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1B4D90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D90

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D90	#FFFFFF	#000000	##FFFFFF
##1B4D90	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#295393

Deuteranopia (green-blind)

#0E498F

Tritanopia (blue-blind)

#005D67

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b4d90;
/* rgb */ color: rgb(27, 77, 144);
/* oklch */ color: oklch(42.5% 0.123 257.1);

Tailwind

colors: {
  custom: {
    50: '#6b7eb1',
    500: '#1b4d90',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d90;
$custom-light: #6b7eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d90",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 144
  },
  "hsl": {
    "h": 214.359,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.4253,
    "c": 0.12287,
    "h": 257.1
  },
  "luminance": 0.07554
}

Semantic roles & 50–950 ramp

primary

#1B4D90

secondary

#BF8C48

accent

#A13DEB

background

#F6F7FA

surface

#ECEEF5

border

#C7C9CF

text

#080911

muted

#7A7B80

Preview Lab

Preview with #1B4D90

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

Preview Lab → · Contrast checker → · Palette generator →