#1B2F8F#1B2F8F

#1B2F8F is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.0% C 0.159 H 267.8°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F8F
RGB	rgb(27, 47, 143)
HSL	hsl(230, 68%, 33%)
HSV	hsv(230, 81%, 56%)
CMYK	cmyk(81.1%, 67.1%, 0%, 43.9%)
CIE-LAB	lab(24.48, 29.21, -55.02)
CIE-LCH	lch(24.48, 62.30, 297.96°)
OKLab	oklab(36.04% -0.0061 -0.1593)
OKLCH	oklch(36.04% 0.159 267.8)
XYZ	xyz(6.4247, 4.2485, 26.4627)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F8F #8F7B1B

analogous

#1B698F #1B2F8F #411B8F

triadic

#1B2F8F #8F1B2F #2F8F1B

tetradic

#1B2F8F #8F1B69 #8F7B1B #1B8F41

square

#1B2F8F #8F1B69 #8F7B1B #1B8F41

split-complementary

#1B2F8F #8F411B #698F1B

monochromatic

#080D28 #111E5C #1B2F8F #2540C2 #4862DC

Accessibility & contrast

On white

11.35

#1B2F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1B2F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F8F

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F8F	#FFFFFF	#000000	##FFFFFF
##1B2F8F	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004092

Deuteranopia (green-blind)

#00358D

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b2f8f;
/* rgb */ color: rgb(27, 47, 143);
/* oklch */ color: oklch(36.0% 0.159 267.8);

Tailwind

colors: {
  custom: {
    50: '#6d67b1',
    500: '#1b2f8f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f8f;
$custom-light: #6d67b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f8f",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 143
  },
  "hsl": {
    "h": 229.655,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.36044,
    "c": 0.15942,
    "h": 267.8
  },
  "luminance": 0.04249
}

Semantic roles & 50–950 ramp

primary

#1B2F8F

secondary

#BEAA48

accent

#CD3DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1B2F8F

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

Preview Lab → · Contrast checker → · Palette generator →