#100C29
Closest named color: Rich Black (#0D1B2A). oklch(18% 0.057 285.4), rgb(16, 12, 41).
Aa
White text reads best on this color (18.97:1).
About this color
#100C29 is a very dark, muted purple. In OKLCH its lightness is 18%, its chroma 0.057 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.051 away. White text reads best on it, at 18.97:1.
| Hue family | Purples |
| Lightness | very dark (18%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.10:1 |
| White text | 18.97:1 |
Values
| HEX | #100C29 |
| RGB | rgb(16, 12, 41) |
| HSL | hsl(248, 55%, 10%) |
| OKLCH | oklch(18% 0.057 285.4) |
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 #100C29 | 18.97:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #100C29 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #100C29 text on white | 18.97:1 | AAA | Lc 105.3 | Preferred for body text |
| #100C29 text on black | 1.10:1 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D6D6F2
oklch(88.5% 0.038 285.6)
-
Step 300
300
#BCBBEB
oklch(80.9% 0.067 285.7)
-
Step 400
400
#9A97E1
oklch(70.8% 0.107 285.2)
-
Step 500
500
#837BD9
oklch(63.2% 0.138 285.6)
-
Step 600
600
#6D62C6
oklch(55.6% 0.15 285.4)
-
Step 700
700
#5B51AB
oklch(49.1% 0.139 285.1)
-
Step 800
800
#4B438A
oklch(42.8% 0.114 285.7)
-
Step 900
900
#3E396F
oklch(37.8% 0.09 285.4)
-
Step 950
950 (this color)
#100C29
oklch(18% 0.057 285.4)
#100C29 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) | #00112A | 0.031 |
| Deuteranopia (no green cones) | #000F28 | 0.031 |
| Tritanopia (no blue cones) | #071318 | 0.050 |
| Achromatopsia (no color) | #101010 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100C29
#100C29
oklch(18% 0.057 285.4)
- #141200
#141200
oklch(17.9% 0.038 104.7)
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 #100C29, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.051
- Dark Navy #000435 ΔE 0.051
- Midnight #03012D ΔE 0.052
- Rich Navy #001219 ΔE 0.052
- Dark Navy Blue #00022E ΔE 0.056
- Very Dark Blue #000133 ΔE 0.059
- Navy Blue #001146 ΔE 0.063
- Almost Black #070D0D ΔE 0.064
Use #100C29 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.