#1B0F71#1B0F71

#1B0F71 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.7% C 0.154 H 275.1°. Best body text is #FFFFFF at 15.52:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F71
RGB	rgb(27, 15, 113)
HSL	hsl(247, 77%, 25%)
HSV	hsv(247, 87%, 44%)
CMYK	cmyk(76.1%, 86.7%, 0%, 55.7%)
CIE-LAB	lab(14.21, 37.73, -52.94)
CIE-LCH	lch(14.21, 65.01, 305.48°)
OKLab	oklab(27.73% 0.0137 -0.1531)
OKLCH	oklch(27.73% 0.154 275.1)
XYZ	xyz(3.6025, 1.7666, 15.7707)
Luminance	0.0177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F71 #65710F

analogous

#0F3471 #1B0F71 #4C0F71

triadic

#1B0F71 #711B0F #0F711B

tetradic

#1B0F71 #710F34 #65710F #0F714C

square

#1B0F71 #710F34 #65710F #0F714C

split-complementary

#1B0F71 #714C0F #34710F

monochromatic

#06041B #0E083B #1B0F71 #2816A7 #351DDD

Accessibility & contrast

On white

15.52

#1B0F71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#1B0F71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F71

15.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F71	#FFFFFF	#000000	##FFFFFF
##1B0F71	1.00	15.52	1.35	15.52
#FFFFFF	15.52	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002874

Deuteranopia (green-blind)

#00206F

Tritanopia (blue-blind)

#002F41

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1b0f71;
/* rgb */ color: rgb(27, 15, 113);
/* oklch */ color: oklch(27.7% 0.154 275.1);

Tailwind

colors: {
  custom: {
    50: '#68519b',
    500: '#1b0f71',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f71;
$custom-light: #68519b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f71",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 113
  },
  "hsl": {
    "h": 247.347,
    "s": 76.563,
    "l": 25.098
  },
  "oklch": {
    "l": 0.27733,
    "c": 0.15367,
    "h": 275.1
  },
  "luminance": 0.01767
}

Semantic roles & 50–950 ramp

primary

#1B0F71

secondary

#9AA933

accent

#F335DC

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B0F71

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

Preview Lab → · Contrast checker → · Palette generator →