#1B3B95#1B3B95

#1B3B95 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.0% C 0.153 H 265.0°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#1B3B95
RGB	rgb(27, 59, 149)
HSL	hsl(224, 69%, 35%)
HSV	hsv(224, 82%, 58%)
CMYK	cmyk(81.9%, 60.4%, 0%, 41.6%)
CIE-LAB	lab(28.19, 23.38, -52.63)
CIE-LCH	lch(28.19, 57.59, 293.95°)
OKLab	oklab(38.96% -0.0133 -0.1522)
OKLCH	oklch(38.96% 0.153 265)
XYZ	xyz(7.4389, 5.5300, 29.1033)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3B95 #95751B

analogous

#1B7895 #1B3B95 #381B95

triadic

#1B3B95 #951B3B #3B951B

tetradic

#1B3B95 #951B78 #95751B #1B9538

square

#1B3B95 #951B78 #95751B #1B9538

split-complementary

#1B3B95 #95381B #78951B

monochromatic

#08122D #122661 #1B3B95 #2450C9 #4C72DF

Accessibility & contrast

On white

9.97

#1B3B95 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1B3B95 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3B95

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3B95	#FFFFFF	#000000	##FFFFFF
##1B3B95	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004898

Deuteranopia (green-blind)

#003D93

Tritanopia (blue-blind)

#005262

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b3b95;
/* rgb */ color: rgb(27, 59, 149);
/* oklch */ color: oklch(39.0% 0.153 265.0);

Tailwind

colors: {
  custom: {
    50: '#6d70b5',
    500: '#1b3b95',
    950: '#000000',
  },
}

SCSS

$custom: #1b3b95;
$custom-light: #6d70b5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3b95",
  "rgb": {
    "r": 27,
    "g": 59,
    "b": 149
  },
  "hsl": {
    "h": 224.262,
    "s": 69.318,
    "l": 34.51
  },
  "oklch": {
    "l": 0.38965,
    "c": 0.15274,
    "h": 265
  },
  "luminance": 0.05531
}

Semantic roles & 50–950 ramp

primary

#1B3B95

secondary

#C1A24B

accent

#BE3CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3B95

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

Preview Lab → · Contrast checker → · Palette generator →