#1C103F
Closest named color: Dark Indigo (#1F0954). oklch(22.2% 0.085 289.4), rgb(28, 16, 63).
Aa
White text reads best on this color (17.56:1).
About this color
#1C103F is a very dark, moderately saturated purple. In OKLCH its lightness is 22%, its chroma 0.085 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.041 away. White text reads best on it, at 17.56:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.19:1 |
| White text | 17.56:1 |
Values
| HEX | #1C103F |
| RGB | rgb(28, 16, 63) |
| HSL | hsl(255, 59%, 15%) |
| OKLCH | oklch(22.2% 0.085 289.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1C103F | 17.56:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #1C103F | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #1C103F text on white | 17.56:1 | AAA | Lc 104.1 | Preferred for body text |
| #1C103F text on black | 1.19:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FD
oklch(93.6% 0.03 290)
-
Step 200
200
#D7D4FC
oklch(88.5% 0.055 288.7)
-
Step 300
300
#BFB6FE
oklch(80.9% 0.101 289.7)
-
Step 400
400
#A08DFD
oklch(70.8% 0.16 289.5)
-
Step 500
500
#8B6BFB
oklch(63.2% 0.205 289.4)
-
Step 600
600
#774DEA
oklch(55.7% 0.223 289.4)
-
Step 700
700
#643CCB
oklch(49.1% 0.207 289.3)
-
Step 800
800
#5133A4
oklch(42.6% 0.172 289.2)
-
Step 900
900
#432F82
oklch(37.7% 0.133 289.6)
-
Step 950
950 (this color)
#1C103F
oklch(22.2% 0.085 289.4)
#1C103F with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #001A40 | 0.046 |
| Deuteranopia (no green cones) | #00183E | 0.045 |
| Tritanopia (no blue cones) | #101B25 | 0.069 |
| Achromatopsia (no color) | #191919 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C103F
#1C103F
oklch(22.2% 0.085 289.4)
- #1D1D00
#1D1D00
oklch(22.3% 0.049 109.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1C103F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.041
- Midnight Purple #280137 ΔE 0.045
- Navy Blue #001146 ΔE 0.048
- Very Dark Purple #2A0134 ΔE 0.050
- Dark Purple #35063E ΔE 0.059
- Night Blue #040348 ΔE 0.060
- Rich Black #0D1B2A ΔE 0.061
- Deep Purple #36013F ΔE 0.064
Use #1C103F in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.