#1F2B89#1F2B89

#1F2B89 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.9% C 0.155 H 270.2°. Best body text is #FFFFFF at 11.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B89
RGB	rgb(31, 43, 137)
HSL	hsl(233, 63%, 33%)
HSV	hsv(233, 77%, 54%)
CMYK	cmyk(77.4%, 68.6%, 0%, 46.3%)
CIE-LAB	lab(23.08, 29.99, -53.57)
CIE-LCH	lch(23.08, 61.40, 299.24°)
OKLab	oklab(34.9% 0.0004 -0.155)
OKLCH	oklch(34.9% 0.155 270.2)
XYZ	xyz(5.9428, 3.8246, 24.0871)
Luminance	0.0382 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B89 #897D1F

analogous

#1F6089 #1F2B89 #481F89

triadic

#1F2B89 #891F2B #2B891F

tetradic

#1F2B89 #891F60 #897D1F #1F8948

square

#1F2B89 #891F60 #897D1F #1F8948

split-complementary

#1F2B89 #89481F #60891F

monochromatic

#080C25 #141B57 #1F2B89 #2A3BBB #4C5CD6

Accessibility & contrast

On white

11.90

#1F2B89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1F2B89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B89

11.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B89	#FFFFFF	#000000	##FFFFFF
##1F2B89	1.00	11.90	1.77	11.90
#FFFFFF	11.90	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8C

Deuteranopia (green-blind)

#003287

Tritanopia (blue-blind)

#004456

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f2b89;
/* rgb */ color: rgb(31, 43, 137);
/* oklch */ color: oklch(34.9% 0.155 270.2);

Tailwind

colors: {
  custom: {
    50: '#6d64ac',
    500: '#1f2b89',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b89;
$custom-light: #6d64ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b89",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 137
  },
  "hsl": {
    "h": 233.208,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.34901,
    "c": 0.15501,
    "h": 270.2
  },
  "luminance": 0.03825
}

Semantic roles & 50–950 ramp

primary

#1F2B89

secondary

#B9AD4B

accent

#D442E6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1F2B89

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

Preview Lab → · Contrast checker → · Palette generator →