#1B2170#1B2170

#1B2170 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.3% C 0.134 H 272.0°. Best body text is #FFFFFF at 14.02:1 contrast (WCAG AA passes).

Color values

HEX	#1B2170
RGB	rgb(27, 33, 112)
HSL	hsl(236, 61%, 27%)
HSV	hsv(236, 76%, 44%)
CMYK	cmyk(75.9%, 70.5%, 0%, 56.1%)
CIE-LAB	lab(17.87, 26.73, -46.25)
CIE-LCH	lch(17.87, 53.42, 300.03°)
OKLab	oklab(30.29% 0.0047 -0.1337)
OKLCH	oklch(30.29% 0.134 272)
XYZ	xyz(3.9195, 2.4902, 15.6002)
Luminance	0.0249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2170 #706A1B

analogous

#1B4B70 #1B2170 #401B70

triadic

#1B2170 #701B21 #21701B

tetradic

#1B2170 #701B4B #706A1B #1B7040

square

#1B2170 #701B4B #706A1B #1B7040

split-complementary

#1B2170 #70401B #4B701B

monochromatic

#060719 #0F123F #1B2170 #2730A1 #3741CF

Accessibility & contrast

On white

14.02

#1B2170 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#1B2170 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2170

14.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2170	#FFFFFF	#000000	##FFFFFF
##1B2170	1.00	14.02	1.50	14.02
#FFFFFF	14.02	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003072

Deuteranopia (green-blind)

#00286F

Tritanopia (blue-blind)

#003645

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1b2170;
/* rgb */ color: rgb(27, 33, 112);
/* oklch */ color: oklch(30.3% 0.134 272.0);

Tailwind

colors: {
  custom: {
    50: '#665c9a',
    500: '#1b2170',
    950: '#000000',
  },
}

SCSS

$custom: #1b2170;
$custom-light: #665c9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2170",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 112
  },
  "hsl": {
    "h": 235.765,
    "s": 61.151,
    "l": 27.255
  },
  "oklch": {
    "l": 0.30294,
    "c": 0.13381,
    "h": 272
  },
  "luminance": 0.02491
}

Semantic roles & 50–950 ramp

primary

#1B2170

secondary

#A59E42

accent

#D944E4

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B2170

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

Preview Lab → · Contrast checker → · Palette generator →