#1F2897#1F2897

#1F2897 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.9% C 0.177 H 270.1°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#1F2897
RGB	rgb(31, 40, 151)
HSL	hsl(236, 66%, 36%)
HSV	hsv(236, 79%, 59%)
CMYK	cmyk(79.5%, 73.5%, 0%, 40.8%)
CIE-LAB	lab(23.81, 37.06, -61.05)
CIE-LCH	lch(23.81, 71.42, 301.26°)
OKLab	oklab(35.86% 0.0004 -0.1768)
OKLCH	oklch(35.86% 0.177 270.1)
XYZ	xyz(6.9079, 4.0425, 29.6884)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2897 #978E1F

analogous

#1F6497 #1F2897 #521F97

triadic

#1F2897 #971F28 #28971F

tetradic

#1F2897 #971F64 #978E1F #1F9752

square

#1F2897 #971F64 #978E1F #1F9752

split-complementary

#1F2897 #97521F #64971F

monochromatic

#0A0D31 #151B64 #1F2897 #2935CA #545FDC

Accessibility & contrast

On white

11.61

#1F2897 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1F2897 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2897

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2897	#FFFFFF	#000000	##FFFFFF
##1F2897	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F9A

Deuteranopia (green-blind)

#003395

Tritanopia (blue-blind)

#00485D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f2897;
/* rgb */ color: rgb(31, 40, 151);
/* oklch */ color: oklch(35.9% 0.177 270.1);

Tailwind

colors: {
  custom: {
    50: '#7163b7',
    500: '#1f2897',
    950: '#000000',
  },
}

SCSS

$custom: #1f2897;
$custom-light: #7163b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2897",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 151
  },
  "hsl": {
    "h": 235.5,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.35858,
    "c": 0.17681,
    "h": 270.1
  },
  "luminance": 0.04043
}

Semantic roles & 50–950 ramp

primary

#1F2897

secondary

#BFB752

accent

#DC3FE9

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F2897

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

Preview Lab → · Contrast checker → · Palette generator →