#1B4888#1B4888

#1B4888 is a dark, moderate blue. Relative luminance 0.066; OKLCH L 40.8% C 0.118 H 257.9°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#1B4888
RGB	rgb(27, 72, 136)
HSL	hsl(215, 67%, 32%)
HSV	hsv(215, 80%, 53%)
CMYK	cmyk(80.1%, 47.1%, 0%, 46.7%)
CIE-LAB	lab(30.98, 9.16, -40.13)
CIE-LCH	lch(30.98, 41.16, 282.86°)
OKLab	oklab(40.77% -0.0247 -0.1151)
OKLCH	oklch(40.77% 0.118 257.9)
XYZ	xyz(7.2117, 6.6445, 24.1902)
Luminance	0.0664 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4888 #885B1B

analogous

#1B7F88 #1B4888 #241B88

triadic

#1B4888 #881B48 #48881B

tetradic

#1B4888 #881B7F #885B1B #1B8824

square

#1B4888 #881B7F #885B1B #1B8824

split-complementary

#1B4888 #88241B #7F881B

monochromatic

#071222 #112D55 #1B4888 #2563BB #4482DA

Accessibility & contrast

On white

9.02

#1B4888 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1B4888 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4888

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4888	#FFFFFF	#000000	##FFFFFF
##1B4888	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264E8A

Deuteranopia (green-blind)

#0C4487

Tritanopia (blue-blind)

#005761

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4888;
/* rgb */ color: rgb(27, 72, 136);
/* oklch */ color: oklch(40.8% 0.118 257.9);

Tailwind

colors: {
  custom: {
    50: '#697aab',
    500: '#1b4888',
    950: '#000000',
  },
}

SCSS

$custom: #1b4888;
$custom-light: #697aab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4888",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 136
  },
  "hsl": {
    "h": 215.229,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.40774,
    "c": 0.11774,
    "h": 257.9
  },
  "luminance": 0.06645
}

Semantic roles & 50–950 ramp

primary

#1B4888

secondary

#BB8A44

accent

#A33EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4888

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

Preview Lab → · Contrast checker → · Palette generator →