#1B127F#1B127F

#1B127F is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.8% C 0.168 H 272.9°. Best body text is #FFFFFF at 14.59:1 contrast (WCAG AA passes).

Color values

HEX	#1B127F
RGB	rgb(27, 18, 127)
HSL	hsl(245, 75%, 28%)
HSV	hsv(245, 86%, 50%)
CMYK	cmyk(78.7%, 85.8%, 0%, 50.2%)
CIE-LAB	lab(16.49, 40.80, -58.16)
CIE-LCH	lch(16.49, 71.05, 305.05°)
OKLab	oklab(29.82% 0.0086 -0.1682)
OKLCH	oklch(29.82% 0.168 272.9)
XYZ	xyz(4.4978, 2.1975, 20.2617)
Luminance	0.0220 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B127F #767F12

analogous

#123F7F #1B127F #51127F

triadic

#1B127F #7F1B12 #127F1B

tetradic

#1B127F #7F123F #767F12 #127F51

square

#1B127F #7F123F #767F12 #127F51

split-complementary

#1B127F #7F5112 #3F7F12

monochromatic

#06041B #100A49 #1B127F #261AB5 #3A2BE1

Accessibility & contrast

On white

14.59

#1B127F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1B127F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B127F

14.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B127F	#FFFFFF	#000000	##FFFFFF
##1B127F	1.00	14.59	1.44	14.59
#FFFFFF	14.59	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E82

Deuteranopia (green-blind)

#00237D

Tritanopia (blue-blind)

#00354A

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b127f;
/* rgb */ color: rgb(27, 18, 127);
/* oklch */ color: oklch(29.8% 0.168 272.9);

Tailwind

colors: {
  custom: {
    50: '#6b54a5',
    500: '#1b127f',
    950: '#000000',
  },
}

SCSS

$custom: #1b127f;
$custom-light: #6b54a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b127f",
  "rgb": {
    "r": 27,
    "g": 18,
    "b": 127
  },
  "hsl": {
    "h": 244.954,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.29822,
    "c": 0.16846,
    "h": 272.9
  },
  "luminance": 0.02198
}

Semantic roles & 50–950 ramp

primary

#1B127F

secondary

#AAB538

accent

#F236E2

background

#F7F5FA

surface

#EDE8F4

border

#C8C4CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1B127F

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

Preview Lab → · Contrast checker → · Palette generator →