#100E21
Closest named color: Rich Navy (#001219). oklch(17.8% 0.038 286.6), rgb(16, 14, 33).
Aa
White text reads best on this color (18.97:1).
About this color
#100E21 is a very dark, muted purple. In OKLCH its lightness is 18%, its chroma 0.038 and its hue 287°. 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 18.97:1.
| Hue family | Purples |
| Lightness | very dark (18%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 18.97:1 |
Values
| HEX | #100E21 |
| RGB | rgb(16, 14, 33) |
| HSL | hsl(246, 40%, 9%) |
| OKLCH | oklch(17.8% 0.038 286.6) |
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 #100E21 | 18.97:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #100E21 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #100E21 text on white | 18.97:1 | AAA | Lc 105.4 | Preferred for body text |
| #100E21 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D7D7EA
oklch(88.5% 0.026 285.9)
-
Step 300
300
#BEBDDD
oklch(81% 0.045 286.8)
-
Step 400
400
#9D9ACC
oklch(70.7% 0.073 287.1)
-
Step 500
500
#8581BF
oklch(63.1% 0.092 286.4)
-
Step 600
600
#6F69AC
oklch(55.5% 0.103 286.7)
-
Step 700
700
#5D5893
oklch(49.2% 0.093 286.3)
-
Step 800
800
#4C4877
oklch(42.7% 0.077 286.6)
-
Step 900
900
#3F3C60
oklch(37.6% 0.061 286.9)
-
Step 950
950 (this color)
#100E21
oklch(17.8% 0.038 286.6)
#100E21 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) | #081122 | 0.016 |
| Deuteranopia (no green cones) | #071021 | 0.017 |
| Tritanopia (no blue cones) | #0B1215 | 0.034 |
| Achromatopsia (no color) | #101010 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100E21
#100E21
oklch(17.8% 0.038 286.6)
- #131200
#131200
oklch(17.8% 0.038 107.3)
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 #100E21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.038
- Rich Black #0D1B2A ΔE 0.046
- Almost Black #070D0D ΔE 0.047
- Midnight #03012D ΔE 0.063
- Dark Navy #000435 ΔE 0.064
- Dark Navy Blue #00022E ΔE 0.066
- Very Dark Blue #000133 ΔE 0.071
- Midnight Purple #280137 ΔE 0.076
Use #100E21 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.