#100C1F
Closest named color: Rich Navy (#001219). oklch(17.1% 0.039 291.4), rgb(16, 12, 31).
Aa
White text reads best on this color (19.18:1).
About this color
#100C1F is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.039 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.040 away. White text reads best on it, at 19.18:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.039) |
| Temperature | in between |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.09:1 |
| White text | 19.18:1 |
Values
| HEX | #100C1F |
| RGB | rgb(16, 12, 31) |
| HSL | hsl(253, 44%, 8%) |
| OKLCH | oklch(17.1% 0.039 291.4) |
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 #100C1F | 19.18:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #100C1F | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #100C1F text on white | 19.18:1 | AAA | Lc 105.5 | Preferred for body text |
| #100C1F text on black | 1.09:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#D9D6E9
oklch(88.4% 0.026 293.1)
-
Step 300
300
#C0BCDD
oklch(80.9% 0.046 290.9)
-
Step 400
400
#A199CB
oklch(70.8% 0.073 291.8)
-
Step 500
500
#8A7FBE
oklch(63.1% 0.094 291.5)
-
Step 600
600
#7468AA
oklch(55.7% 0.101 291.1)
-
Step 700
700
#625692
oklch(49.1% 0.095 291.7)
-
Step 800
800
#504676
oklch(42.6% 0.079 292.3)
-
Step 900
900
#423B60
oklch(37.6% 0.063 291.8)
-
Step 950
950 (this color)
#100C1F
oklch(17.1% 0.039 291.4)
#100C1F 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) | #060F20 | 0.020 |
| Deuteranopia (no green cones) | #060E1F | 0.020 |
| Tritanopia (no blue cones) | #0C1013 | 0.034 |
| Achromatopsia (no color) | #0F0F0F | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100C1F
#100C1F
oklch(17.1% 0.039 291.4)
- #101100
#101100
oklch(17.1% 0.038 112.3)
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 #100C1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.040
- Almost Black #070D0D ΔE 0.045
- Rich Black #0D1B2A ΔE 0.053
- Midnight #03012D ΔE 0.061
- Dark Navy Blue #00022E ΔE 0.064
- Dark Navy #000435 ΔE 0.065
- Very Dark Blue #000133 ΔE 0.070
- Very Dark Brown #1D0200 ΔE 0.076
Use #100C1F 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.