#1C128F#1C128F

#1C128F is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.9% C 0.187 H 271.7°. Best body text is #FFFFFF at 13.70:1 contrast (WCAG AA passes).

Color values

HEX	#1C128F
RGB	rgb(28, 18, 143)
HSL	hsl(245, 78%, 32%)
HSV	hsv(245, 87%, 56%)
CMYK	cmyk(80.4%, 87.4%, 0%, 43.9%)
CIE-LAB	lab(18.64, 45.86, -64.68)
CIE-LCH	lch(18.64, 79.29, 305.34°)
OKLab	oklab(31.91% 0.0055 -0.1871)
OKLCH	oklch(31.91% 0.187 271.7)
XYZ	xyz(5.6515, 2.6620, 26.1972)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C128F #858F12

analogous

#12478F #1C128F #5B128F

triadic

#1C128F #8F1C12 #128F1C

tetradic

#1C128F #8F1247 #858F12 #128F5B

square

#1C128F #8F1247 #858F12 #128F5B

split-complementary

#1C128F #8F5B12 #478F12

monochromatic

#070422 #110B59 #1C128F #2719C5 #4436E6

Accessibility & contrast

On white

13.70

#1C128F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1C128F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C128F

13.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C128F	#FFFFFF	#000000	##FFFFFF
##1C128F	1.00	13.70	1.53	13.70
#FFFFFF	13.70	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003392

Deuteranopia (green-blind)

#00278D

Tritanopia (blue-blind)

#003C54

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1c128f;
/* rgb */ color: rgb(28, 18, 143);
/* oklch */ color: oklch(31.9% 0.187 271.7);

Tailwind

colors: {
  custom: {
    50: '#7055b1',
    500: '#1c128f',
    950: '#000000',
  },
}

SCSS

$custom: #1c128f;
$custom-light: #7055b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c128f",
  "rgb": {
    "r": 28,
    "g": 18,
    "b": 143
  },
  "hsl": {
    "h": 244.8,
    "s": 77.64,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31907,
    "c": 0.18714,
    "h": 271.7
  },
  "luminance": 0.02663
}

Semantic roles & 50–950 ramp

primary

#1C128F

secondary

#B8C33A

accent

#F434E5

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1C128F

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

Preview Lab → · Contrast checker → · Palette generator →