#1F27A9#1F27A9

#1F27A9 is a dark, highly saturated blue. Relative luminance 0.046; OKLCH L 37.7% C 0.200 H 269.4°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX	#1F27A9
RGB	rgb(31, 39, 169)
HSL	hsl(237, 69%, 39%)
HSV	hsv(237, 82%, 66%)
CMYK	cmyk(81.7%, 76.9%, 0%, 33.7%)
CIE-LAB	lab(25.58, 43.92, -69.09)
CIE-LCH	lch(25.58, 81.87, 302.45°)
OKLab	oklab(37.7% -0.002 -0.2001)
OKLCH	oklch(37.7% 0.2 269.4)
XYZ	xyz(8.4496, 4.6059, 37.9721)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F27A9 #A9A11F

analogous

#1F6CA9 #1F27A9 #5C1FA9

triadic

#1F27A9 #A91F27 #27A91F

tetradic

#1F27A9 #A91F6C #A9A11F #1FA95C

square

#1F27A9 #A91F6C #A9A11F #1FA95C

split-complementary

#1F27A9 #A95C1F #6CA91F

monochromatic

#0C0F42 #161B75 #1F27A9 #2D37D8 #6068E2

Accessibility & contrast

On white

10.93

#1F27A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1F27A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F27A9

10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F27A9	#FFFFFF	#000000	##FFFFFF
##1F27A9	1.00	10.93	1.92	10.93
#FFFFFF	10.93	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043AD

Deuteranopia (green-blind)

#0036A7

Tritanopia (blue-blind)

#004E67

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f27a9;
/* rgb */ color: rgb(31, 39, 169);
/* oklch */ color: oklch(37.7% 0.200 269.4);

Tailwind

colors: {
  custom: {
    50: '#7663c4',
    500: '#1f27a9',
    950: '#000000',
  },
}

SCSS

$custom: #1f27a9;
$custom-light: #7663c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f27a9",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 169
  },
  "hsl": {
    "h": 236.522,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.37702,
    "c": 0.20015,
    "h": 269.4
  },
  "luminance": 0.04607
}

Semantic roles & 50–950 ramp

primary

#1F27A9

secondary

#C7C05D

accent

#E23CEC

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #1F27A9

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

Preview Lab → · Contrast checker → · Palette generator →