#1B3297#1B3297

#1B3297 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.4% C 0.167 H 267.2°. Best body text is #FFFFFF at 10.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B3297
RGB	rgb(27, 50, 151)
HSL	hsl(229, 70%, 35%)
HSV	hsv(229, 82%, 59%)
CMYK	cmyk(82.1%, 66.9%, 0%, 40.8%)
CIE-LAB	lab(26.00, 30.28, -57.45)
CIE-LCH	lch(26.00, 64.94, 297.79°)
OKLab	oklab(37.4% -0.0081 -0.1664)
OKLCH	oklch(37.4% 0.167 267.2)
XYZ	xyz(7.1766, 4.7477, 29.8103)
Luminance	0.0475 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3297 #97801B

analogous

#1B7097 #1B3297 #421B97

triadic

#1B3297 #971B32 #32971B

tetradic

#1B3297 #971B70 #97801B #1B9742

square

#1B3297 #971B70 #97801B #1B9742

split-complementary

#1B3297 #97421B #70971B

monochromatic

#08102F #122163 #1B3297 #2443CB #4D68DF

Accessibility & contrast

On white

10.77

#1B3297 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1B3297 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3297

10.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3297	#FFFFFF	#000000	##FFFFFF
##1B3297	1.00	10.77	1.95	10.77
#FFFFFF	10.77	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449A

Deuteranopia (green-blind)

#003895

Tritanopia (blue-blind)

#004D60

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1b3297;
/* rgb */ color: rgb(27, 50, 151);
/* oklch */ color: oklch(37.4% 0.167 267.2);

Tailwind

colors: {
  custom: {
    50: '#6f69b7',
    500: '#1b3297',
    950: '#000000',
  },
}

SCSS

$custom: #1b3297;
$custom-light: #6f69b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3297",
  "rgb": {
    "r": 27,
    "g": 50,
    "b": 151
  },
  "hsl": {
    "h": 228.871,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.37398,
    "c": 0.16656,
    "h": 267.2
  },
  "luminance": 0.04749
}

Semantic roles & 50–950 ramp

primary

#1B3297

secondary

#C1AC4C

accent

#CC3BEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1B3297

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

Preview Lab → · Contrast checker → · Palette generator →