#1B4B95#1B4B95

#1B4B95 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.4% C 0.132 H 259.1°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B95
RGB	rgb(27, 75, 149)
HSL	hsl(216, 69%, 35%)
HSV	hsv(216, 82%, 58%)
CMYK	cmyk(81.9%, 49.7%, 0%, 41.6%)
CIE-LAB	lab(32.78, 12.40, -45.20)
CIE-LCH	lch(32.78, 46.87, 285.34°)
OKLab	oklab(42.44% -0.0249 -0.13)
OKLCH	oklch(42.44% 0.132 259.1)
XYZ	xyz(8.3909, 7.4341, 29.4206)
Luminance	0.0743 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B95 #95651B

analogous

#1B8895 #1B4B95 #281B95

triadic

#1B4B95 #951B4B #4B951B

tetradic

#1B4B95 #951B88 #95651B #1B9528

square

#1B4B95 #951B88 #95651B #1B9528

split-complementary

#1B4B95 #95281B #88951B

monochromatic

#08172D #123161 #1B4B95 #2465C9 #4C86DF

Accessibility & contrast

On white

8.44

#1B4B95 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1B4B95 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B95

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B95	#FFFFFF	#000000	##FFFFFF
##1B4B95	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#205398

Deuteranopia (green-blind)

#004894

Tritanopia (blue-blind)

#005D69

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4b95;
/* rgb */ color: rgb(27, 75, 149);
/* oklch */ color: oklch(42.4% 0.132 259.1);

Tailwind

colors: {
  custom: {
    50: '#6c7cb5',
    500: '#1b4b95',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b95;
$custom-light: #6c7cb5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b95",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 149
  },
  "hsl": {
    "h": 216.393,
    "s": 69.318,
    "l": 34.51
  },
  "oklch": {
    "l": 0.42439,
    "c": 0.13237,
    "h": 259.1
  },
  "luminance": 0.07435
}

Semantic roles & 50–950 ramp

primary

#1B4B95

secondary

#C1924B

accent

#A73CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4B95

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

Preview Lab → · Contrast checker → · Palette generator →