#100921
Closest named color: Rich Navy (#001219). oklch(16.5% 0.049 293.9), rgb(16, 9, 33).
Aa
White text reads best on this color (19.38:1).
About this color
#100921 is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.049 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.049 away. White text reads best on it, at 19.38:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.049) |
| Temperature | in between |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.08:1 |
| White text | 19.38:1 |
Values
| HEX | #100921 |
| RGB | rgb(16, 9, 33) |
| HSL | hsl(258, 57%, 8%) |
| OKLCH | oklch(16.5% 0.049 293.9) |
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 #100921 | 19.38:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #100921 | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #100921 text on white | 19.38:1 | AAA | Lc 105.6 | Preferred for body text |
| #100921 text on black | 1.08:1 | 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
#F5F4FA
oklch(97% 0.008 293.9)
-
Step 100
100
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#DAD6ED
oklch(88.6% 0.032 293.7)
-
Step 300
300
#C2BAE3
oklch(80.9% 0.058 294)
-
Step 400
400
#A396D5
oklch(70.8% 0.092 293.4)
-
Step 500
500
#8E7ACA
oklch(63.1% 0.119 294.2)
-
Step 600
600
#7862B6
oklch(55.5% 0.128 293.9)
-
Step 700
700
#65519D
oklch(49.1% 0.119 293.7)
-
Step 800
800
#52437F
oklch(42.7% 0.098 293.3)
-
Step 900
900
#443966
oklch(37.8% 0.076 293.7)
-
Step 950
950 (this color)
#100921
oklch(16.5% 0.049 293.9)
#100921 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) | #020E22 | 0.031 |
| Deuteranopia (no green cones) | #030D20 | 0.029 |
| Tritanopia (no blue cones) | #0C0E13 | 0.039 |
| Achromatopsia (no color) | #0D0D0D | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100921
#100921
oklch(16.5% 0.049 293.9)
- #0E1000
#0E1000
oklch(16.5% 0.037 114.8)
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 #100921, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.049
- Almost Black #070D0D ΔE 0.053
- Midnight #03012D ΔE 0.053
- Dark Navy Blue #00022E ΔE 0.058
- Dark Navy #000435 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.062
- Very Dark Blue #000133 ΔE 0.064
- Midnight Purple #280137 ΔE 0.072
Use #100921 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.