#100D1F
Closest named color: Rich Navy (#001219). oklch(17.4% 0.037 289.7), rgb(16, 13, 31).
Aa
White text reads best on this color (19.10:1).
About this color
#100D1F is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.037 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.038 away. White text reads best on it, at 19.10:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.09:1 |
| White text | 19.10:1 |
Values
| HEX | #100D1F |
| RGB | rgb(16, 13, 31) |
| HSL | hsl(250, 41%, 9%) |
| OKLCH | oklch(17.4% 0.037 289.7) |
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 #100D1F | 19.10:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #100D1F | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #100D1F text on white | 19.10:1 | AAA | Lc 105.5 | Preferred for body text |
| #100D1F 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
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D8D7E8
oklch(88.5% 0.023 288.6)
-
Step 300
300
#BFBCDB
oklch(80.8% 0.043 289.8)
-
Step 400
400
#9F9ACA
oklch(70.8% 0.07 289.3)
-
Step 500
500
#8880BC
oklch(63% 0.089 289.7)
-
Step 600
600
#7269A8
oklch(55.6% 0.097 289.4)
-
Step 700
700
#605790
oklch(49.1% 0.09 289.9)
-
Step 800
800
#4E4875
oklch(42.8% 0.074 289)
-
Step 900
900
#413C5E
oklch(37.7% 0.058 290.1)
-
Step 950
950 (this color)
#100D1F
oklch(17.4% 0.037 289.7)
#100D1F 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) | #071020 | 0.018 |
| Deuteranopia (no green cones) | #070F1F | 0.017 |
| Tritanopia (no blue cones) | #0C1014 | 0.030 |
| Achromatopsia (no color) | #0F0F0F | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100D1F
#100D1F
oklch(17.4% 0.037 289.7)
- #111100
#111100
oklch(17.2% 0.037 109.8)
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 #100D1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.038
- Almost Black #070D0D ΔE 0.044
- Rich Black #0D1B2A ΔE 0.050
- Midnight #03012D ΔE 0.063
- Dark Navy #000435 ΔE 0.066
- Dark Navy Blue #00022E ΔE 0.066
- Very Dark Blue #000133 ΔE 0.072
- Very Dark Brown #1D0200 ΔE 0.076
Use #100D1F 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.