#1C1043
Closest named color: Dark Indigo (#1F0954). oklch(22.6% 0.091 287.6), rgb(28, 16, 67).
Aa
White text reads best on this color (17.43:1).
About this color
#1C1043 is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.091 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.033 away. White text reads best on it, at 17.43:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.20:1 |
| White text | 17.43:1 |
Values
| HEX | #1C1043 |
| RGB | rgb(28, 16, 67) |
| HSL | hsl(254, 61%, 16%) |
| OKLCH | oklch(22.6% 0.091 287.6) |
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 #1C1043 | 17.43:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #1C1043 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #1C1043 text on white | 17.43:1 | AAA | Lc 104.0 | Preferred for body text |
| #1C1043 text on black | 1.20:1 | 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E8E7FE
oklch(93.6% 0.031 287.8)
-
Step 200
200
#D6D4FF
oklch(88.5% 0.059 287.3)
-
Step 300
300
#BCB7FF
oklch(80.9% 0.101 287.1)
-
Step 400
400
#9D8DFF
oklch(70.7% 0.163 287.9)
-
Step 500
500
#876BFF
oklch(63.1% 0.211 287.5)
-
Step 600
600
#7448F3
oklch(55.5% 0.239 287.7)
-
Step 700
700
#6237D4
oklch(49% 0.223 287.7)
-
Step 800
800
#5030AB
oklch(42.7% 0.184 287.9)
-
Step 900
900
#412D88
oklch(37.7% 0.144 287.5)
-
Step 950
950 (this color)
#1C1043
oklch(22.6% 0.091 287.6)
#1C1043 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) | #001B45 | 0.046 |
| Deuteranopia (no green cones) | #001842 | 0.044 |
| Tritanopia (no blue cones) | #0D1D27 | 0.076 |
| Achromatopsia (no color) | #1A1A1A | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C1043
#1C1043
oklch(22.6% 0.091 287.6)
- #1F1D00
#1F1D00
oklch(22.6% 0.048 106)
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 #1C1043, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.033
- Navy Blue #001146 ΔE 0.046
- Midnight Purple #280137 ΔE 0.048
- Very Dark Purple #2A0134 ΔE 0.054
- Night Blue #040348 ΔE 0.058
- Dark Purple #35063E ΔE 0.060
- Deep Purple #36013F ΔE 0.065
- Rich Black #0D1B2A ΔE 0.066
Use #1C1043 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.