#1F235E#1F235E

#1F235E is a dark, moderate blue. Relative luminance 0.023; OKLCH L 29.2% C 0.104 H 275.0°. Best body text is #FFFFFF at 14.38:1 contrast (WCAG AA passes).

Color values

HEX	#1F235E
RGB	rgb(31, 35, 94)
HSL	hsl(236, 50%, 25%)
HSV	hsv(236, 67%, 37%)
CMYK	cmyk(67%, 62.8%, 0%, 63.1%)
CIE-LAB	lab(17.00, 18.99, -35.87)
CIE-LCH	lch(17.00, 40.59, 297.90°)
OKLab	oklab(29.2% 0.0091 -0.1032)
OKLCH	oklch(29.2% 0.104 275)
XYZ	xyz(3.1858, 2.3013, 10.8638)
Luminance	0.0230 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F235E #5E5A1F

analogous

#1F435E #1F235E #3A1F5E

triadic

#1F235E #5E1F23 #235E1F

tetradic

#1F235E #5E1F43 #5E5A1F #1F5E3A

square

#1F235E #5E1F43 #5E5A1F #1F5E3A

split-complementary

#1F235E #5E3A1F #435E1F

monochromatic

#080917 #101230 #1F235E #2E348C #3D45BA

Accessibility & contrast

On white

14.38

#1F235E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1F235E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F235E

14.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F235E	#FFFFFF	#000000	##FFFFFF
##1F235E	1.00	14.38	1.46	14.38
#FFFFFF	14.38	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D60

Deuteranopia (green-blind)

#00275D

Tritanopia (blue-blind)

#00313C

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f235e;
/* rgb */ color: rgb(31, 35, 94);
/* oklch */ color: oklch(29.2% 0.104 275.0);

Tailwind

colors: {
  custom: {
    50: '#635d8c',
    500: '#1f235e',
    950: '#000000',
  },
}

SCSS

$custom: #1f235e;
$custom-light: #635d8c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f235e",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 94
  },
  "hsl": {
    "h": 236.19,
    "s": 50.4,
    "l": 24.51
  },
  "oklch": {
    "l": 0.292,
    "c": 0.10357,
    "h": 275
  },
  "luminance": 0.02302
}

Semantic roles & 50–950 ramp

primary

#1F235E

secondary

#938E46

accent

#D14EDA

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06040C

muted

#7A797D

Preview Lab

Preview with #1F235E

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

Preview Lab → · Contrast checker → · Palette generator →