#1B2270#1B2270

#1B2270 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.133 H 271.7°. Best body text is #FFFFFF at 13.91:1 contrast (WCAG AA passes).

Color values

HEX	#1B2270
RGB	rgb(27, 34, 112)
HSL	hsl(235, 61%, 27%)
HSV	hsv(235, 76%, 44%)
CMYK	cmyk(75.9%, 69.6%, 0%, 56.1%)
CIE-LAB	lab(18.13, 26.05, -45.83)
CIE-LCH	lch(18.13, 52.72, 299.62°)
OKLab	oklab(30.48% 0.004 -0.1325)
OKLCH	oklch(30.48% 0.133 271.7)
XYZ	xyz(3.9477, 2.5465, 15.6096)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2270 #70691B

analogous

#1B4D70 #1B2270 #3F1B70

triadic

#1B2270 #701B22 #22701B

tetradic

#1B2270 #701B4D #70691B #1B703F

square

#1B2270 #701B4D #70691B #1B703F

split-complementary

#1B2270 #703F1B #4D701B

monochromatic

#060719 #0F133F #1B2270 #2731A1 #3743CF

Accessibility & contrast

On white

13.91

#1B2270 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1B2270 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2270

13.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2270	#FFFFFF	#000000	##FFFFFF
##1B2270	1.00	13.91	1.51	13.91
#FFFFFF	13.91	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003072

Deuteranopia (green-blind)

#00286F

Tritanopia (blue-blind)

#003745

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1b2270;
/* rgb */ color: rgb(27, 34, 112);
/* oklch */ color: oklch(30.5% 0.133 271.7);

Tailwind

colors: {
  custom: {
    50: '#665d9a',
    500: '#1b2270',
    950: '#000000',
  },
}

SCSS

$custom: #1b2270;
$custom-light: #665d9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2270",
  "rgb": {
    "r": 27,
    "g": 34,
    "b": 112
  },
  "hsl": {
    "h": 235.059,
    "s": 61.151,
    "l": 27.255
  },
  "oklch": {
    "l": 0.30479,
    "c": 0.13257,
    "h": 271.7
  },
  "luminance": 0.02547
}

Semantic roles & 50–950 ramp

primary

#1B2270

secondary

#A59D42

accent

#D744E4

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B2270

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

Preview Lab → · Contrast checker → · Palette generator →